Merge branch 'v4-docs-streamlined' of https://github.com/twbs/bootstrap into v4-docs-streamlined

56 files changed, 2209 insertions, 1596 deletions

diff --git a/js/.eslintrc.json b/js/.eslintrc.json
index 746f899f0..930e1f3c2 100644
--- a/js/.eslintrc.json
+++ b/js/.eslintrc.json
@@ -1,206 +1,230 @@
 {
-    "root": true,
-    "parser": "babel-eslint",
-    "parserOptions": {
-        "ecmaVersion": 7,
-        "sourceType": "module"
-    },
-    "env": {
-        "browser": true,
-        "es6": true,
-        "jquery": true
-    },
-    "rules": {
+  "root": true,
+  "parser": "babel-eslint",
+  "env": {
+    "browser": true,
+    "es6": true,
+    "jquery": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "ecmaVersion": 8,
+    "sourceType": "module"
+  },
+  "rules": {
+    // Possible Errors
+    "no-extra-parens": "error",
+    "no-prototype-builtins": "off",
+    "no-template-curly-in-string": "error",
+    "no-unsafe-negation": "error",
+    "valid-jsdoc": "error",
 
-        // Possible Errors
-        "array-callback-return": "error",
-        "comma-dangle": ["error", "never"],
-        "handle-callback-err": "error",
-        "no-bitwise": "error",
-        "no-cond-assign": "error",
-        "no-console": "error",
-        "no-constant-condition": "error",
-        "no-control-regex": "error",
-        "no-debugger": "error",
-        "no-dupe-args": "error",
-        "no-dupe-keys": "error",
-        "no-duplicate-case": "error",
-        "no-duplicate-imports": "error",
-        "no-empty": "error",
-        "no-empty-character-class": "error",
-        "no-empty-function": "error",
-        "no-empty-pattern": "error",
-        "no-ex-assign": "error",
-        "no-extra-boolean-cast": "error",
-        "no-extra-label": "error",
-        "no-extra-parens": "off",
-        "no-extra-semi": "error",
-        "no-func-assign": "error",
-        "no-inner-declarations": "error",
-        "no-invalid-regexp": "error",
-        "no-irregular-whitespace": "error",
-        "no-negated-in-lhs": "error",
-        "no-obj-calls": "error",
-        "no-regex-spaces": "error",
-        "no-restricted-globals": ["error", "event"],
-        "no-self-assign": "error",
-        "no-sparse-arrays": "error",
-        "no-unexpected-multiline": "error",
-        "no-unmodified-loop-condition": "error",
-        "no-unreachable": "error",
-        "no-unused-labels": "error",
-        "no-useless-escape": "error",
-        "no-useless-rename": "error",
-        "use-isnan": "error",
-        "valid-jsdoc": "off",
-        "valid-typeof": "error",
+    // Best Practices
+    "accessor-pairs": "error",
+    "array-callback-return": "error",
+    "block-scoped-var": "error",
+    "class-methods-use-this": "off",
+    "complexity": "error",
+    "consistent-return": "error",
+    "curly": "error",
+    "default-case": "error",
+    "dot-location": ["error", "property"],
+    "dot-notation": "error",
+    "eqeqeq": "error",
+    "guard-for-in": "error",
+    "no-alert": "error",
+    "no-caller": "error",
+    "no-div-regex": "error",
+    "no-else-return": "error",
+    "no-empty-function": "error",
+    "no-eq-null": "error",
+    "no-eval": "error",
+    "no-extend-native": "error",
+    "no-extra-bind": "error",
+    "no-extra-label": "error",
+    "no-floating-decimal": "error",
+    "no-global-assign": "error",
+    "no-implicit-coercion": "error",
+    "no-implicit-globals": "error",
+    "no-implied-eval": "error",
+    "no-invalid-this": "off",
+    "no-iterator": "error",
+    "no-labels": "error",
+    "no-lone-blocks": "error",
+    "no-loop-func": "error",
+    "no-magic-numbers": ["error", {
+      "ignore": [-1, 0, 1],
+      "ignoreArrayIndexes": true
+      }
+    ],
+    "no-multi-spaces": ["error", {
+      "exceptions": {
+        "AssignmentExpression": true,
+        "ArrowFunctionExpression": true,
+        "CallExpression": true,
+        "VariableDeclarator": true
+        }
+      }
+    ],
+    "no-multi-str": "error",
+    "no-new-func": "off",
+    "no-new-wrappers": "error",
+    "no-new": "error",
+    "no-octal-escape": "error",
+    "no-param-reassign": "off",
+    "no-proto": "error",
+    "no-restricted-properties": "error",
+    "no-return-assign": "off",
+    "no-script-url": "error",
+    "no-self-compare": "error",
+    "no-sequences": "error",
+    "no-throw-literal": "error",
+    "no-unmodified-loop-condition": "error",
+    "no-unused-expressions": "error",
+    "no-useless-call": "error",
+    "no-useless-concat": "error",
+    "no-useless-escape": "error",
+    "no-void": "error",
+    "no-warning-comments": "off",
+    "no-with": "error",
+    "radix": "error",
+    "vars-on-top": "error",
+    "wrap-iife": "error",
+    "yoda": "error",
 
-        //Best Practices
-        "accessor-pairs": "error",
-        "block-scoped-var": "error",
-        "consistent-return": "error",
-        "curly": "error",
-        "default-case": "error",
-        "dot-location": "off",
-        "dot-notation": "off",
-        "eqeqeq": "error",
-        "guard-for-in": "error",
-        "no-alert": "error",
-        "no-caller": "error",
-        "no-case-declarations": "error",
-        "no-div-regex": "error",
-        "no-else-return": "error",
-        "no-eq-null": "error",
-        "no-eval": "error",
-        "no-extend-native": "error",
-        "no-extra-bind": "error",
-        "no-fallthrough": "error",
-        "no-floating-decimal": "error",
-        "no-implicit-coercion": "error",
-        "no-implied-eval": "error",
-        "no-invalid-this": "off",
-        "no-iterator": "error",
-        "no-labels": "error",
-        "no-lone-blocks": "error",
-        "no-loop-func": "error",
-        "no-magic-numbers": ["error", {"ignore": [-1, 0, 1]}],
-        "no-multi-spaces": "off",
-        "no-multi-str": "error",
-        "no-native-reassign": "error",
-        "no-new": "error",
-        "no-new-func": "off",
-        "no-new-wrappers": "error",
-        "no-octal": "error",
-        "no-octal-escape": "error",
-        "no-param-reassign": "off",
-        "no-process-env": "error",
-        "no-proto": "error",
-        "no-redeclare": "error",
-        "no-return-assign": "error",
-        "no-script-url": "error",
-        "no-self-compare": "error",
-        "no-sequences": "error",
-        "no-throw-literal": "error",
-        "no-unused-expressions": "error",
-        "no-useless-call": "error",
-        "no-useless-concat": "error",
-        "no-useless-constructor": "error",
-        "no-void": "error",
-        "no-warning-comments": "off",
-        "no-with": "error",
-        "radix": "error",
-        "unicode-bom": ["error", "never"],
-        "vars-on-top": "off",
-        "wrap-iife": "error",
-        "yoda": "error",
+    // Strict Mode
+    "strict": "error",
 
-        // Variables
-        "init-declarations": "off",
-        "no-catch-shadow": "error",
-        "no-delete-var": "error",
-        "no-label-var": "error",
-        "no-shadow": "off",
-        "no-shadow-restricted-names": "error",
-        "no-undef": "error",
-        "no-undefined": "off",
-        "no-undef-init": "error",
-        "no-unused-vars": "error",
-        "no-use-before-define": "off",
+    // Variables
+    "init-declarations": "off",
+    "no-catch-shadow": "error",
+    "no-label-var": "error",
+    "no-restricted-globals": "error",
+    "no-shadow-restricted-names": "error",
+    "no-shadow": "off",
+    "no-undef-init": "error",
+    "no-undefined": "off",
+    "no-use-before-define": "off",
 
-        // Stylistic
-        "array-bracket-spacing": "error",
-        "block-spacing": "error",
-        "brace-style": "error",
-        "camelcase": "error",
-        "comma-spacing": "error",
-        "comma-style": "error",
-        "computed-property-spacing": "error",
-        "consistent-this": "error",
-        "eol-last": "error",
-        "func-names": "off",
-        "func-style": "off",
-        "indent": ["error", 2, {"SwitchCase": 1}],
-        "key-spacing": "off",
-        "keyword-spacing": "error",
-        "linebreak-style": "error",
-        "lines-around-comment": "off",
-        "max-statements-per-line": ["error", { "max": 1 }],
-        "new-cap": "off",
-        "newline-after-var": "off",
-        "new-parens": "error",
-        "no-array-constructor": "error",
-        "no-continue": "off",
-        "no-inline-comments": "off",
-        "no-lonely-if": "error",
-        "no-mixed-spaces-and-tabs": "error",
-        "no-multiple-empty-lines": "error",
-        "no-nested-ternary": "off",
-        "no-new-object": "error",
-        "no-spaced-func": "error",
-        "no-ternary": "off",
-        "no-trailing-spaces": "error",
-        "no-underscore-dangle": "off",
-        "no-unneeded-ternary": "error",
-        "no-unsafe-finally": "error",
-        "no-useless-computed-key": "error",
-        "no-whitespace-before-property": "error",
-        "object-curly-spacing": ["warn", "always"],
-        "object-property-newline": "error",
-        "one-var": "off",
-        "operator-assignment": "error",
-        "operator-linebreak": "off",
-        "padded-blocks": "off",
-        "quote-props": ["error", "as-needed"],
-        "quotes": ["error", "single"],
-        "semi": ["error", "never"],
-        "semi-spacing": "error",
-        "sort-vars": "error",
-        "space-before-blocks": "error",
-        "space-before-function-paren": "off",
-        "spaced-comment": "error",
-        "space-infix-ops": "error",
-        "space-in-parens": "error",
-        "space-unary-ops": "error",
+    // Node.js and CommonJS
+    "callback-return": "off",
+    "global-require": "error",
+    "handle-callback-err": "error",
+    "no-mixed-requires": "error",
+    "no-new-require": "error",
+    "no-path-concat": "error",
+    "no-process-env": "error",
+    "no-process-exit": "error",
+    "no-restricted-modules": "error",
+    "no-sync": "error",
 
-        // es6
-        "arrow-parens": "error",
-        "arrow-spacing": "error",
-        "constructor-super": "error",
-        "generator-star-spacing": "error",
-        "no-class-assign": "error",
-        "no-const-assign": "error",
-        "no-dupe-class-members": "error",
-        "no-new-symbol": "error",
-        "no-this-before-super": "error",
-        "no-var": "error",
-        "object-shorthand": "error",
-        "prefer-arrow-callback": "error",
-        "prefer-const": "off",
-        "prefer-reflect": "off",
-        "prefer-rest-params": "error",
-        "prefer-spread": "error",
-        "prefer-template": "error",
-        "require-yield": "error"
+    // Stylistic Issues
+    "array-bracket-spacing": "error",
+    "block-spacing": "error",
+    "brace-style": "error",
+    "camelcase": "error",
+    "comma-dangle": "error",
+    "comma-spacing": "error",
+    "comma-style": "error",
+    "computed-property-spacing": "error",
+    "consistent-this": "error",
+    "eol-last": "error",
+    "func-call-spacing": "error",
+    "func-names": "off",
+    "func-style": ["error", "declaration"],
+    "id-blacklist": "error",
+    "id-length": "off",
+    "id-match": "error",
+    "indent": ["error", 2, { "SwitchCase": 1 }],
+    "jsx-quotes": "error",
+    "key-spacing": "off",
+    "keyword-spacing": "error",
+    "line-comment-position": "off",
+    "linebreak-style": ["error", "unix"],
+    "lines-around-comment": "off",
+    "lines-around-directive": "error",
+    "max-depth": ["error", 10],
+    "max-len": "off",
+    "max-lines": "off",
+    "max-nested-callbacks": "error",
+    "max-params": "off",
+    "max-statements-per-line": "error",
+    "max-statements": "off",
+    "multiline-ternary": "off",
+    "new-cap": ["error", { "capIsNewExceptionPattern": "$.*" }],
+    "new-parens": "error",
+    "newline-after-var": "off",
+    "newline-before-return": "off",
+    "newline-per-chained-call": ["error", { "ignoreChainWithDepth": 5 }],
+    "no-array-constructor": "error",
+    "no-bitwise": "error",
+    "no-continue": "off",
+    "no-inline-comments": "off",
+    "no-lonely-if": "error",
+    "no-mixed-operators": "off",
+    "no-multiple-empty-lines": "error",
+    "no-negated-condition": "off",
+    "no-nested-ternary": "error",
+    "no-new-object": "error",
+    "no-plusplus": "off",
+    "no-restricted-syntax": "error",
+    "no-tabs": "error",
+    "no-ternary": "off",
+    "no-trailing-spaces": "error",
+    "no-underscore-dangle": "off",
+    "no-unneeded-ternary": "error",
+    "no-whitespace-before-property": "error",
+    "object-curly-newline": ["error", { "minProperties": 1 }],
+    "object-curly-spacing": ["error", "always"],
+    "object-property-newline": "error",
+    "one-var-declaration-per-line": "error",
+    "one-var": ["error", "never"],
+    "operator-assignment": "error",
+    "operator-linebreak": "off",
+    "padded-blocks": "off",
+    "quote-props": ["error", "as-needed"],
+    "quotes": ["error", "single"],
+    "require-jsdoc": "off",
+    "semi-spacing": "error",
+    "semi": ["error", "never"],
+    "sort-keys": "off",
+    "sort-vars": "error",
+    "space-before-blocks": "error",
+    "space-before-function-paren": ["error", {
+        "anonymous": "always",
+        "named": "never"
+    }],
+    "space-in-parens": "error",
+    "space-infix-ops": "error",
+    "space-unary-ops": "error",
+    "spaced-comment": "error",
+    "unicode-bom": "error",
+    "wrap-regex": "off",
 
-    }
+    // ECMAScript 6
+    "arrow-body-style": "off",
+    "arrow-parens": "error",
+    "arrow-spacing": "error",
+    "generator-star-spacing": "error",
+    "no-confusing-arrow": "error",
+    "no-duplicate-imports": "error",
+    "no-restricted-imports": "error",
+    "no-useless-computed-key": "error",
+    "no-useless-constructor": "error",
+    "no-useless-rename": "error",
+    "no-var": "error",
+    "object-shorthand": "error",
+    "prefer-arrow-callback": "error",
+    "prefer-const": "error",
+    "prefer-numeric-literals": "error",
+    "prefer-reflect": "off",
+    "prefer-rest-params": "error",
+    "prefer-spread": "error",
+    "prefer-template": "error",
+    "rest-spread-spacing": "error",
+    "sort-imports": "error",
+    "symbol-description": "error",
+    "template-curly-spacing": "error",
+    "yield-star-spacing": "error"
+  }
 }
diff --git a/js/dist/alert.js b/js/dist/alert.js
index 4b9970166..34882c92a 100644
--- a/js/dist/alert.js
+++ b/js/dist/alert.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): alert.js
+ * Bootstrap (v4.0.0-alpha.5): alert.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Alert = function ($) {
    */
 
   var NAME = 'alert';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.alert';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -38,7 +38,7 @@ var Alert = function ($) {
   var ClassName = {
     ALERT: 'alert',
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   /**
@@ -101,14 +101,18 @@ var Alert = function ($) {
     };
 
     Alert.prototype._removeElement = function _removeElement(element) {
-      $(element).removeClass(ClassName.IN);
+      var _this = this;
+
+      $(element).removeClass(ClassName.SHOW);
 
       if (!Util.supportsTransitionEnd() || !$(element).hasClass(ClassName.FADE)) {
         this._destroyElement(element);
         return;
       }
 
-      $(element).one(Util.TRANSITION_END, $.proxy(this._destroyElement, this, element)).emulateTransitionEnd(TRANSITION_DURATION);
+      $(element).one(Util.TRANSITION_END, function (event) {
+        return _this._destroyElement(element, event);
+      }).emulateTransitionEnd(TRANSITION_DURATION);
     };
 
     Alert.prototype._destroyElement = function _destroyElement(element) {
diff --git a/js/dist/alert.js.map b/js/dist/alert.js.map
index f5a55dbe2..1b6d955f0 100644
--- a/js/dist/alert.js.map
+++ b/js/dist/alert.js.map
@@ -1 +1 @@
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): alert.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Alert = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'alert'\n  const VERSION             = '4.0.0-alpha.4'\n  const DATA_KEY            = 'bs.alert'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 150\n\n  const Selector = {\n    DISMISS : '[data-dismiss=\"alert\"]'\n  }\n\n  const Event = {\n    CLOSE          : `close${EVENT_KEY}`,\n    CLOSED         : `closed${EVENT_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    ALERT : 'alert',\n    FADE  : 'fade',\n    IN    : 'in'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Alert {\n\n    constructor(element) {\n      this._element = element\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    close(element) {\n      element = element || this._element\n\n      let rootElement = this._getRootElement(element)\n      let customEvent = this._triggerCloseEvent(rootElement)\n\n      if (customEvent.isDefaultPrevented()) {\n        return\n      }\n\n      this._removeElement(rootElement)\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      this._element = null\n    }\n\n\n    // private\n\n    _getRootElement(element) {\n      let selector = Util.getSelectorFromElement(element)\n      let parent   = false\n\n      if (selector) {\n        parent = $(selector)[0]\n      }\n\n      if (!parent) {\n        parent = $(element).closest(`.${ClassName.ALERT}`)[0]\n      }\n\n      return parent\n    }\n\n    _triggerCloseEvent(element) {\n      let closeEvent = $.Event(Event.CLOSE)\n\n      $(element).trigger(closeEvent)\n      return closeEvent\n    }\n\n    _removeElement(element) {\n      $(element).removeClass(ClassName.IN)\n\n      if (!Util.supportsTransitionEnd() ||\n          !$(element).hasClass(ClassName.FADE)) {\n        this._destroyElement(element)\n        return\n      }\n\n      $(element)\n        .one(Util.TRANSITION_END, $.proxy(this._destroyElement, this, element))\n        .emulateTransitionEnd(TRANSITION_DURATION)\n    }\n\n    _destroyElement(element) {\n      $(element)\n        .detach()\n        .trigger(Event.CLOSED)\n        .remove()\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let $element = $(this)\n        let data     = $element.data(DATA_KEY)\n\n        if (!data) {\n          data = new Alert(this)\n          $element.data(DATA_KEY, data)\n        }\n\n        if (config === 'close') {\n          data[config](this)\n        }\n      })\n    }\n\n    static _handleDismiss(alertInstance) {\n      return function (event) {\n        if (event) {\n          event.preventDefault()\n        }\n\n        alertInstance.close(this)\n      }\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document).on(\n    Event.CLICK_DATA_API,\n    Selector.DISMISS,\n    Alert._handleDismiss(new Alert())\n  )\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Alert._jQueryInterface\n  $.fn[NAME].Constructor = Alert\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Alert._jQueryInterface\n  }\n\n  return Alert\n\n})(jQuery)\n\nexport default Alert\n"]}
\ No newline at end of file
+{"version":3,"sources":["../src/alert.js"],"names":["Alert","$","NAME","VERSION","DATA_KEY","EVENT_KEY","DATA_API_KEY","JQUERY_NO_CONFLICT","fn","TRANSITION_DURATION","Selector","DISMISS","Event","CLOSE","CLOSED","CLICK_DATA_API","ClassName","ALERT","FADE","SHOW","element","_element","close","rootElement","_getRootElement","customEvent","_triggerCloseEvent","isDefaultPrevented","_removeElement","dispose","removeData","selector","Util","getSelectorFromElement","parent","closest","closeEvent","trigger","removeClass","supportsTransitionEnd","hasClass","_destroyElement","one","TRANSITION_END","event","emulateTransitionEnd","detach","remove","_jQueryInterface","config","each","$element","data","_handleDismiss","alertInstance","preventDefault","document","on","Constructor","noConflict","jQuery"],"mappings":";;;;AAGA;;;;;;;AAOA,IAAMA,QAAS,UAACC,CAAD,EAAO;;AAGpB;;;;;;AAMA,MAAMC,OAAsB,OAA5B;AACA,MAAMC,UAAsB,eAA5B;AACA,MAAMC,WAAsB,UAA5B;AACA,MAAMC,kBAA0BD,QAAhC;AACA,MAAME,eAAsB,WAA5B;AACA,MAAMC,qBAAsBN,EAAEO,EAAF,CAAKN,IAAL,CAA5B;AACA,MAAMO,sBAAsB,GAA5B;;AAEA,MAAMC,WAAW;AACfC,aAAU;AADK,GAAjB;;AAIA,MAAMC,QAAQ;AACZC,qBAAyBR,SADb;AAEZS,uBAA0BT,SAFd;AAGZU,8BAAyBV,SAAzB,GAAqCC;AAHzB,GAAd;;AAMA,MAAMU,YAAY;AAChBC,WAAQ,OADQ;AAEhBC,UAAQ,MAFQ;AAGhBC,UAAQ;AAHQ,GAAlB;;AAOA;;;;;;AAlCoB,MAwCdnB,KAxCc;AA0ClB,mBAAYoB,OAAZ,EAAqB;AAAA;;AACnB,WAAKC,QAAL,GAAgBD,OAAhB;AACD;;AAGD;;AAOA;;AAtDkB,oBAwDlBE,KAxDkB,kBAwDZF,OAxDY,EAwDH;AACbA,gBAAUA,WAAW,KAAKC,QAA1B;;AAEA,UAAME,cAAc,KAAKC,eAAL,CAAqBJ,OAArB,CAApB;AACA,UAAMK,cAAc,KAAKC,kBAAL,CAAwBH,WAAxB,CAApB;;AAEA,UAAIE,YAAYE,kBAAZ,EAAJ,EAAsC;AACpC;AACD;;AAED,WAAKC,cAAL,CAAoBL,WAApB;AACD,KAnEiB;;AAAA,oBAqElBM,OArEkB,sBAqER;AACR5B,QAAE6B,UAAF,CAAa,KAAKT,QAAlB,EAA4BjB,QAA5B;AACA,WAAKiB,QAAL,GAAgB,IAAhB;AACD,KAxEiB;;AA2ElB;;AA3EkB,oBA6ElBG,eA7EkB,4BA6EFJ,OA7EE,EA6EO;AACvB,UAAMW,WAAWC,KAAKC,sBAAL,CAA4Bb,OAA5B,CAAjB;AACA,UAAIc,SAAa,KAAjB;;AAEA,UAAIH,QAAJ,EAAc;AACZG,iBAASjC,EAAE8B,QAAF,EAAY,CAAZ,CAAT;AACD;;AAED,UAAI,CAACG,MAAL,EAAa;AACXA,iBAASjC,EAAEmB,OAAF,EAAWe,OAAX,OAAuBnB,UAAUC,KAAjC,EAA0C,CAA1C,CAAT;AACD;;AAED,aAAOiB,MAAP;AACD,KA1FiB;;AAAA,oBA4FlBR,kBA5FkB,+BA4FCN,OA5FD,EA4FU;AAC1B,UAAMgB,aAAanC,EAAEW,KAAF,CAAQA,MAAMC,KAAd,CAAnB;;AAEAZ,QAAEmB,OAAF,EAAWiB,OAAX,CAAmBD,UAAnB;AACA,aAAOA,UAAP;AACD,KAjGiB;;AAAA,oBAmGlBR,cAnGkB,2BAmGHR,OAnGG,EAmGM;AAAA;;AACtBnB,QAAEmB,OAAF,EAAWkB,WAAX,CAAuBtB,UAAUG,IAAjC;;AAEA,UAAI,CAACa,KAAKO,qBAAL,EAAD,IACA,CAACtC,EAAEmB,OAAF,EAAWoB,QAAX,CAAoBxB,UAAUE,IAA9B,CADL,EAC0C;AACxC,aAAKuB,eAAL,CAAqBrB,OAArB;AACA;AACD;;AAEDnB,QAAEmB,OAAF,EACGsB,GADH,CACOV,KAAKW,cADZ,EAC4B,UAACC,KAAD;AAAA,eAAW,MAAKH,eAAL,CAAqBrB,OAArB,EAA8BwB,KAA9B,CAAX;AAAA,OAD5B,EAEGC,oBAFH,CAEwBpC,mBAFxB;AAGD,KA/GiB;;AAAA,oBAiHlBgC,eAjHkB,4BAiHFrB,OAjHE,EAiHO;AACvBnB,QAAEmB,OAAF,EACG0B,MADH,GAEGT,OAFH,CAEWzB,MAAME,MAFjB,EAGGiC,MAHH;AAID,KAtHiB;;AAyHlB;;AAzHkB,UA2HXC,gBA3HW,6BA2HMC,MA3HN,EA2Hc;AAC9B,aAAO,KAAKC,IAAL,CAAU,YAAY;AAC3B,YAAMC,WAAWlD,EAAE,IAAF,CAAjB;AACA,YAAImD,OAAaD,SAASC,IAAT,CAAchD,QAAd,CAAjB;;AAEA,YAAI,CAACgD,IAAL,EAAW;AACTA,iBAAO,IAAIpD,KAAJ,CAAU,IAAV,CAAP;AACAmD,mBAASC,IAAT,CAAchD,QAAd,EAAwBgD,IAAxB;AACD;;AAED,YAAIH,WAAW,OAAf,EAAwB;AACtBG,eAAKH,MAAL,EAAa,IAAb;AACD;AACF,OAZM,CAAP;AAaD,KAzIiB;;AAAA,UA2IXI,cA3IW,2BA2IIC,aA3IJ,EA2ImB;AACnC,aAAO,UAAUV,KAAV,EAAiB;AACtB,YAAIA,KAAJ,EAAW;AACTA,gBAAMW,cAAN;AACD;;AAEDD,sBAAchC,KAAd,CAAoB,IAApB;AACD,OAND;AAOD,KAnJiB;;AAAA;AAAA;AAAA,0BAiDG;AACnB,eAAOnB,OAAP;AACD;AAnDiB;;AAAA;AAAA;;AAwJpB;;;;;;AAMAF,IAAEuD,QAAF,EAAYC,EAAZ,CACE7C,MAAMG,cADR,EAEEL,SAASC,OAFX,EAGEX,MAAMqD,cAAN,CAAqB,IAAIrD,KAAJ,EAArB,CAHF;;AAOA;;;;;;AAMAC,IAAEO,EAAF,CAAKN,IAAL,IAAyBF,MAAMgD,gBAA/B;AACA/C,IAAEO,EAAF,CAAKN,IAAL,EAAWwD,WAAX,GAAyB1D,KAAzB;AACAC,IAAEO,EAAF,CAAKN,IAAL,EAAWyD,UAAX,GAAyB,YAAY;AACnC1D,MAAEO,EAAF,CAAKN,IAAL,IAAaK,kBAAb;AACA,WAAOP,MAAMgD,gBAAb;AACD,GAHD;;AAKA,SAAOhD,KAAP;AAED,CApLa,CAoLX4D,MApLW,CAAd","file":"alert.js","sourcesContent":["import Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): alert.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Alert = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'alert'\n  const VERSION             = '4.0.0-alpha.5'\n  const DATA_KEY            = 'bs.alert'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 150\n\n  const Selector = {\n    DISMISS : '[data-dismiss=\"alert\"]'\n  }\n\n  const Event = {\n    CLOSE          : `close${EVENT_KEY}`,\n    CLOSED         : `closed${EVENT_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    ALERT : 'alert',\n    FADE  : 'fade',\n    SHOW  : 'show'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Alert {\n\n    constructor(element) {\n      this._element = element\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    close(element) {\n      element = element || this._element\n\n      const rootElement = this._getRootElement(element)\n      const customEvent = this._triggerCloseEvent(rootElement)\n\n      if (customEvent.isDefaultPrevented()) {\n        return\n      }\n\n      this._removeElement(rootElement)\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      this._element = null\n    }\n\n\n    // private\n\n    _getRootElement(element) {\n      const selector = Util.getSelectorFromElement(element)\n      let parent     = false\n\n      if (selector) {\n        parent = $(selector)[0]\n      }\n\n      if (!parent) {\n        parent = $(element).closest(`.${ClassName.ALERT}`)[0]\n      }\n\n      return parent\n    }\n\n    _triggerCloseEvent(element) {\n      const closeEvent = $.Event(Event.CLOSE)\n\n      $(element).trigger(closeEvent)\n      return closeEvent\n    }\n\n    _removeElement(element) {\n      $(element).removeClass(ClassName.SHOW)\n\n      if (!Util.supportsTransitionEnd() ||\n          !$(element).hasClass(ClassName.FADE)) {\n        this._destroyElement(element)\n        return\n      }\n\n      $(element)\n        .one(Util.TRANSITION_END, (event) => this._destroyElement(element, event))\n        .emulateTransitionEnd(TRANSITION_DURATION)\n    }\n\n    _destroyElement(element) {\n      $(element)\n        .detach()\n        .trigger(Event.CLOSED)\n        .remove()\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        const $element = $(this)\n        let data       = $element.data(DATA_KEY)\n\n        if (!data) {\n          data = new Alert(this)\n          $element.data(DATA_KEY, data)\n        }\n\n        if (config === 'close') {\n          data[config](this)\n        }\n      })\n    }\n\n    static _handleDismiss(alertInstance) {\n      return function (event) {\n        if (event) {\n          event.preventDefault()\n        }\n\n        alertInstance.close(this)\n      }\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document).on(\n    Event.CLICK_DATA_API,\n    Selector.DISMISS,\n    Alert._handleDismiss(new Alert())\n  )\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Alert._jQueryInterface\n  $.fn[NAME].Constructor = Alert\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Alert._jQueryInterface\n  }\n\n  return Alert\n\n})(jQuery)\n\nexport default Alert\n"]}
\ No newline at end of file
diff --git a/js/dist/button.js b/js/dist/button.js
index 20f532fc9..eff882c6d 100644
--- a/js/dist/button.js
+++ b/js/dist/button.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): button.js
+ * Bootstrap (v4.0.0-alpha.5): button.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Button = function ($) {
    */
 
   var NAME = 'button';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.button';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -82,7 +82,7 @@ var Button = function ($) {
 
           if (triggerChangeEvent) {
             input.checked = !$(this._element).hasClass(ClassName.ACTIVE);
-            $(this._element).trigger('change');
+            $(input).trigger('change');
           }
 
           input.focus();
diff --git a/js/dist/button.js.map b/js/dist/button.js.map
index 32343f034..afceb4879 100644
--- a/js/dist/button.js.map
+++ b/js/dist/button.js.map
@@ -1 +1 @@
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* --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): button.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Button = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'button'\n  const VERSION             = '4.0.0-alpha.4'\n  const DATA_KEY            = 'bs.button'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n\n  const ClassName = {\n    ACTIVE : 'active',\n    BUTTON : 'btn',\n    FOCUS  : 'focus'\n  }\n\n  const Selector = {\n    DATA_TOGGLE_CARROT : '[data-toggle^=\"button\"]',\n    DATA_TOGGLE        : '[data-toggle=\"buttons\"]',\n    INPUT              : 'input',\n    ACTIVE             : '.active',\n    BUTTON             : '.btn'\n  }\n\n  const Event = {\n    CLICK_DATA_API      : `click${EVENT_KEY}${DATA_API_KEY}`,\n    FOCUS_BLUR_DATA_API : `focus${EVENT_KEY}${DATA_API_KEY} `\n                        + `blur${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Button {\n\n    constructor(element) {\n      this._element = element\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    toggle() {\n      let triggerChangeEvent = true\n      let rootElement        = $(this._element).closest(\n        Selector.DATA_TOGGLE\n      )[0]\n\n      if (rootElement) {\n        let input = $(this._element).find(Selector.INPUT)[0]\n\n        if (input) {\n          if (input.type === 'radio') {\n            if (input.checked &&\n              $(this._element).hasClass(ClassName.ACTIVE)) {\n              triggerChangeEvent = false\n\n            } else {\n              let activeElement = $(rootElement).find(Selector.ACTIVE)[0]\n\n              if (activeElement) {\n                $(activeElement).removeClass(ClassName.ACTIVE)\n              }\n            }\n          }\n\n          if (triggerChangeEvent) {\n            input.checked = !$(this._element).hasClass(ClassName.ACTIVE)\n            $(this._element).trigger('change')\n          }\n\n          input.focus()\n        }\n\n      } else {\n        this._element.setAttribute('aria-pressed',\n          !$(this._element).hasClass(ClassName.ACTIVE))\n      }\n\n      if (triggerChangeEvent) {\n        $(this._element).toggleClass(ClassName.ACTIVE)\n      }\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      this._element = null\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data = $(this).data(DATA_KEY)\n\n        if (!data) {\n          data = new Button(this)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (config === 'toggle') {\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document)\n    .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE_CARROT, (event) => {\n      event.preventDefault()\n\n      let button = event.target\n\n      if (!$(button).hasClass(ClassName.BUTTON)) {\n        button = $(button).closest(Selector.BUTTON)\n      }\n\n      Button._jQueryInterface.call($(button), 'toggle')\n    })\n    .on(Event.FOCUS_BLUR_DATA_API, Selector.DATA_TOGGLE_CARROT, (event) => {\n      let button = $(event.target).closest(Selector.BUTTON)[0]\n      $(button).toggleClass(ClassName.FOCUS, /^focus(in)?$/.test(event.type))\n    })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Button._jQueryInterface\n  $.fn[NAME].Constructor = Button\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Button._jQueryInterface\n  }\n\n  return Button\n\n})(jQuery)\n\nexport default Button\n"]}
\ No newline at end of file
+{"version":3,"sources":["../src/button.js"],"names":["Button","$","NAME","VERSION","DATA_KEY","EVENT_KEY","DATA_API_KEY","JQUERY_NO_CONFLICT","fn","ClassName","ACTIVE","BUTTON","FOCUS","Selector","DATA_TOGGLE_CARROT","DATA_TOGGLE","INPUT","Event","CLICK_DATA_API","FOCUS_BLUR_DATA_API","element","_element","toggle","triggerChangeEvent","rootElement","closest","input","find","type","checked","hasClass","activeElement","removeClass","trigger","focus","setAttribute","toggleClass","dispose","removeData","_jQueryInterface","config","each","data","document","on","event","preventDefault","button","target","call","test","Constructor","noConflict","jQuery"],"mappings":";;;;AAAA;;;;;;;AAOA,IAAMA,SAAU,UAACC,CAAD,EAAO;;AAGrB;;;;;;AAMA,MAAMC,OAAsB,QAA5B;AACA,MAAMC,UAAsB,eAA5B;AACA,MAAMC,WAAsB,WAA5B;AACA,MAAMC,kBAA0BD,QAAhC;AACA,MAAME,eAAsB,WAA5B;AACA,MAAMC,qBAAsBN,EAAEO,EAAF,CAAKN,IAAL,CAA5B;;AAEA,MAAMO,YAAY;AAChBC,YAAS,QADO;AAEhBC,YAAS,KAFO;AAGhBC,WAAS;AAHO,GAAlB;;AAMA,MAAMC,WAAW;AACfC,wBAAqB,yBADN;AAEfC,iBAAqB,yBAFN;AAGfC,WAAqB,OAHN;AAIfN,YAAqB,SAJN;AAKfC,YAAqB;AALN,GAAjB;;AAQA,MAAMM,QAAQ;AACZC,8BAA8Bb,SAA9B,GAA0CC,YAD9B;AAEZa,yBAAsB,UAAQd,SAAR,GAAoBC,YAApB,mBACOD,SADP,GACmBC,YADnB;AAFV,GAAd;;AAOA;;;;;;AArCqB,MA2CfN,MA3Ce;AA6CnB,oBAAYoB,OAAZ,EAAqB;AAAA;;AACnB,WAAKC,QAAL,GAAgBD,OAAhB;AACD;;AAGD;;AAOA;;AAzDmB,qBA2DnBE,MA3DmB,qBA2DV;AACP,UAAIC,qBAAqB,IAAzB;AACA,UAAMC,cAAmBvB,EAAE,KAAKoB,QAAP,EAAiBI,OAAjB,CACvBZ,SAASE,WADc,EAEvB,CAFuB,CAAzB;;AAIA,UAAIS,WAAJ,EAAiB;AACf,YAAME,QAAQzB,EAAE,KAAKoB,QAAP,EAAiBM,IAAjB,CAAsBd,SAASG,KAA/B,EAAsC,CAAtC,CAAd;;AAEA,YAAIU,KAAJ,EAAW;AACT,cAAIA,MAAME,IAAN,KAAe,OAAnB,EAA4B;AAC1B,gBAAIF,MAAMG,OAAN,IACF5B,EAAE,KAAKoB,QAAP,EAAiBS,QAAjB,CAA0BrB,UAAUC,MAApC,CADF,EAC+C;AAC7Ca,mCAAqB,KAArB;AAED,aAJD,MAIO;AACL,kBAAMQ,gBAAgB9B,EAAEuB,WAAF,EAAeG,IAAf,CAAoBd,SAASH,MAA7B,EAAqC,CAArC,CAAtB;;AAEA,kBAAIqB,aAAJ,EAAmB;AACjB9B,kBAAE8B,aAAF,EAAiBC,WAAjB,CAA6BvB,UAAUC,MAAvC;AACD;AACF;AACF;;AAED,cAAIa,kBAAJ,EAAwB;AACtBG,kBAAMG,OAAN,GAAgB,CAAC5B,EAAE,KAAKoB,QAAP,EAAiBS,QAAjB,CAA0BrB,UAAUC,MAApC,CAAjB;AACAT,cAAEyB,KAAF,EAASO,OAAT,CAAiB,QAAjB;AACD;;AAEDP,gBAAMQ,KAAN;AACD;AAEF,OA1BD,MA0BO;AACL,aAAKb,QAAL,CAAcc,YAAd,CAA2B,cAA3B,EACE,CAAClC,EAAE,KAAKoB,QAAP,EAAiBS,QAAjB,CAA0BrB,UAAUC,MAApC,CADH;AAED;;AAED,UAAIa,kBAAJ,EAAwB;AACtBtB,UAAE,KAAKoB,QAAP,EAAiBe,WAAjB,CAA6B3B,UAAUC,MAAvC;AACD;AACF,KAnGkB;;AAAA,qBAqGnB2B,OArGmB,sBAqGT;AACRpC,QAAEqC,UAAF,CAAa,KAAKjB,QAAlB,EAA4BjB,QAA5B;AACA,WAAKiB,QAAL,GAAgB,IAAhB;AACD,KAxGkB;;AA2GnB;;AA3GmB,WA6GZkB,gBA7GY,6BA6GKC,MA7GL,EA6Ga;AAC9B,aAAO,KAAKC,IAAL,CAAU,YAAY;AAC3B,YAAIC,OAAOzC,EAAE,IAAF,EAAQyC,IAAR,CAAatC,QAAb,CAAX;;AAEA,YAAI,CAACsC,IAAL,EAAW;AACTA,iBAAO,IAAI1C,MAAJ,CAAW,IAAX,CAAP;AACAC,YAAE,IAAF,EAAQyC,IAAR,CAAatC,QAAb,EAAuBsC,IAAvB;AACD;;AAED,YAAIF,WAAW,QAAf,EAAyB;AACvBE,eAAKF,MAAL;AACD;AACF,OAXM,CAAP;AAYD,KA1HkB;;AAAA;AAAA;AAAA,0BAoDE;AACnB,eAAOrC,OAAP;AACD;AAtDkB;;AAAA;AAAA;;AA+HrB;;;;;;AAMAF,IAAE0C,QAAF,EACGC,EADH,CACM3B,MAAMC,cADZ,EAC4BL,SAASC,kBADrC,EACyD,UAAC+B,KAAD,EAAW;AAChEA,UAAMC,cAAN;;AAEA,QAAIC,SAASF,MAAMG,MAAnB;;AAEA,QAAI,CAAC/C,EAAE8C,MAAF,EAAUjB,QAAV,CAAmBrB,UAAUE,MAA7B,CAAL,EAA2C;AACzCoC,eAAS9C,EAAE8C,MAAF,EAAUtB,OAAV,CAAkBZ,SAASF,MAA3B,CAAT;AACD;;AAEDX,WAAOuC,gBAAP,CAAwBU,IAAxB,CAA6BhD,EAAE8C,MAAF,CAA7B,EAAwC,QAAxC;AACD,GAXH,EAYGH,EAZH,CAYM3B,MAAME,mBAZZ,EAYiCN,SAASC,kBAZ1C,EAY8D,UAAC+B,KAAD,EAAW;AACrE,QAAME,SAAS9C,EAAE4C,MAAMG,MAAR,EAAgBvB,OAAhB,CAAwBZ,SAASF,MAAjC,EAAyC,CAAzC,CAAf;AACAV,MAAE8C,MAAF,EAAUX,WAAV,CAAsB3B,UAAUG,KAAhC,EAAuC,eAAesC,IAAf,CAAoBL,MAAMjB,IAA1B,CAAvC;AACD,GAfH;;AAkBA;;;;;;AAMA3B,IAAEO,EAAF,CAAKN,IAAL,IAAyBF,OAAOuC,gBAAhC;AACAtC,IAAEO,EAAF,CAAKN,IAAL,EAAWiD,WAAX,GAAyBnD,MAAzB;AACAC,IAAEO,EAAF,CAAKN,IAAL,EAAWkD,UAAX,GAAyB,YAAY;AACnCnD,MAAEO,EAAF,CAAKN,IAAL,IAAaK,kBAAb;AACA,WAAOP,OAAOuC,gBAAd;AACD,GAHD;;AAKA,SAAOvC,MAAP;AAED,CAtKc,CAsKZqD,MAtKY,CAAf","file":"button.js","sourcesContent":["/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): button.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Button = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'button'\n  const VERSION             = '4.0.0-alpha.5'\n  const DATA_KEY            = 'bs.button'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n\n  const ClassName = {\n    ACTIVE : 'active',\n    BUTTON : 'btn',\n    FOCUS  : 'focus'\n  }\n\n  const Selector = {\n    DATA_TOGGLE_CARROT : '[data-toggle^=\"button\"]',\n    DATA_TOGGLE        : '[data-toggle=\"buttons\"]',\n    INPUT              : 'input',\n    ACTIVE             : '.active',\n    BUTTON             : '.btn'\n  }\n\n  const Event = {\n    CLICK_DATA_API      : `click${EVENT_KEY}${DATA_API_KEY}`,\n    FOCUS_BLUR_DATA_API : `focus${EVENT_KEY}${DATA_API_KEY} `\n                        + `blur${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Button {\n\n    constructor(element) {\n      this._element = element\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    toggle() {\n      let triggerChangeEvent = true\n      const rootElement      = $(this._element).closest(\n        Selector.DATA_TOGGLE\n      )[0]\n\n      if (rootElement) {\n        const input = $(this._element).find(Selector.INPUT)[0]\n\n        if (input) {\n          if (input.type === 'radio') {\n            if (input.checked &&\n              $(this._element).hasClass(ClassName.ACTIVE)) {\n              triggerChangeEvent = false\n\n            } else {\n              const activeElement = $(rootElement).find(Selector.ACTIVE)[0]\n\n              if (activeElement) {\n                $(activeElement).removeClass(ClassName.ACTIVE)\n              }\n            }\n          }\n\n          if (triggerChangeEvent) {\n            input.checked = !$(this._element).hasClass(ClassName.ACTIVE)\n            $(input).trigger('change')\n          }\n\n          input.focus()\n        }\n\n      } else {\n        this._element.setAttribute('aria-pressed',\n          !$(this._element).hasClass(ClassName.ACTIVE))\n      }\n\n      if (triggerChangeEvent) {\n        $(this._element).toggleClass(ClassName.ACTIVE)\n      }\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      this._element = null\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data = $(this).data(DATA_KEY)\n\n        if (!data) {\n          data = new Button(this)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (config === 'toggle') {\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document)\n    .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE_CARROT, (event) => {\n      event.preventDefault()\n\n      let button = event.target\n\n      if (!$(button).hasClass(ClassName.BUTTON)) {\n        button = $(button).closest(Selector.BUTTON)\n      }\n\n      Button._jQueryInterface.call($(button), 'toggle')\n    })\n    .on(Event.FOCUS_BLUR_DATA_API, Selector.DATA_TOGGLE_CARROT, (event) => {\n      const button = $(event.target).closest(Selector.BUTTON)[0]\n      $(button).toggleClass(ClassName.FOCUS, /^focus(in)?$/.test(event.type))\n    })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Button._jQueryInterface\n  $.fn[NAME].Constructor = Button\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Button._jQueryInterface\n  }\n\n  return Button\n\n})(jQuery)\n\nexport default Button\n"]}
\ No newline at end of file
diff --git a/js/dist/carousel.js b/js/dist/carousel.js
index c41111d50..7521844ea 100644
--- a/js/dist/carousel.js
+++ b/js/dist/carousel.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): carousel.js
+ * Bootstrap (v4.0.0-alpha.5): carousel.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var Carousel = function ($) {
    */
 
   var NAME = 'carousel';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.carousel';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -47,7 +47,9 @@ var Carousel = function ($) {
 
   var Direction = {
     NEXT: 'next',
-    PREVIOUS: 'prev'
+    PREV: 'prev',
+    LEFT: 'left',
+    RIGHT: 'right'
   };
 
   var Event = {
@@ -64,8 +66,10 @@ var Carousel = function ($) {
     CAROUSEL: 'carousel',
     ACTIVE: 'active',
     SLIDE: 'slide',
-    RIGHT: 'right',
-    LEFT: 'left',
+    RIGHT: 'carousel-item-right',
+    LEFT: 'carousel-item-left',
+    NEXT: 'carousel-item-next',
+    PREV: 'carousel-item-prev',
     ITEM: 'carousel-item'
   };
 
@@ -73,7 +77,7 @@ var Carousel = function ($) {
     ACTIVE: '.active',
     ACTIVE_ITEM: '.active.carousel-item',
     ITEM: '.carousel-item',
-    NEXT_PREV: '.next, .prev',
+    NEXT_PREV: '.carousel-item-next, .carousel-item-prev',
     INDICATORS: '.carousel-indicators',
     DATA_SLIDE: '[data-slide], [data-slide-to]',
     DATA_RIDE: '[data-ride="carousel"]'
@@ -108,9 +112,10 @@ var Carousel = function ($) {
     // public
 
     Carousel.prototype.next = function next() {
-      if (!this._isSliding) {
-        this._slide(Direction.NEXT);
+      if (this._isSliding) {
+        throw new Error('Carousel is sliding');
       }
+      this._slide(Direction.NEXT);
     };
 
     Carousel.prototype.nextWhenVisible = function nextWhenVisible() {
@@ -121,9 +126,10 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype.prev = function prev() {
-      if (!this._isSliding) {
-        this._slide(Direction.PREVIOUS);
+      if (this._isSliding) {
+        throw new Error('Carousel is sliding');
       }
+      this._slide(Direction.PREVIOUS);
     };
 
     Carousel.prototype.pause = function pause(event) {
@@ -151,7 +157,7 @@ var Carousel = function ($) {
       }
 
       if (this._config.interval && !this._isPaused) {
-        this._interval = setInterval($.proxy(document.visibilityState ? this.nextWhenVisible : this.next, this), this._config.interval);
+        this._interval = setInterval((document.visibilityState ? this.nextWhenVisible : this.next).bind(this), this._config.interval);
       }
     };
 
@@ -207,27 +213,35 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype._addEventListeners = function _addEventListeners() {
+      var _this2 = this;
+
       if (this._config.keyboard) {
-        $(this._element).on(Event.KEYDOWN, $.proxy(this._keydown, this));
+        $(this._element).on(Event.KEYDOWN, function (event) {
+          return _this2._keydown(event);
+        });
       }
 
       if (this._config.pause === 'hover' && !('ontouchstart' in document.documentElement)) {
-        $(this._element).on(Event.MOUSEENTER, $.proxy(this.pause, this)).on(Event.MOUSELEAVE, $.proxy(this.cycle, this));
+        $(this._element).on(Event.MOUSEENTER, function (event) {
+          return _this2.pause(event);
+        }).on(Event.MOUSELEAVE, function (event) {
+          return _this2.cycle(event);
+        });
       }
     };
 
     Carousel.prototype._keydown = function _keydown(event) {
-      event.preventDefault();
-
       if (/input|textarea/i.test(event.target.tagName)) {
         return;
       }
 
       switch (event.which) {
         case ARROW_LEFT_KEYCODE:
+          event.preventDefault();
           this.prev();
           break;
         case ARROW_RIGHT_KEYCODE:
+          event.preventDefault();
           this.next();
           break;
         default:
@@ -257,10 +271,10 @@ var Carousel = function ($) {
       return itemIndex === -1 ? this._items[this._items.length - 1] : this._items[itemIndex];
     };
 
-    Carousel.prototype._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, directionalClassname) {
+    Carousel.prototype._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {
       var slideEvent = $.Event(Event.SLIDE, {
         relatedTarget: relatedTarget,
-        direction: directionalClassname
+        direction: eventDirectionName
       });
 
       $(this._element).trigger(slideEvent);
@@ -281,21 +295,33 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype._slide = function _slide(direction, element) {
-      var _this2 = this;
+      var _this3 = this;
 
       var activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0];
       var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);
 
       var isCycling = Boolean(this._interval);
 
-      var directionalClassName = direction === Direction.NEXT ? ClassName.LEFT : ClassName.RIGHT;
+      var directionalClassName = void 0;
+      var orderClassName = void 0;
+      var eventDirectionName = void 0;
+
+      if (direction === Direction.NEXT) {
+        directionalClassName = ClassName.LEFT;
+        orderClassName = ClassName.NEXT;
+        eventDirectionName = Direction.LEFT;
+      } else {
+        directionalClassName = ClassName.RIGHT;
+        orderClassName = ClassName.PREV;
+        eventDirectionName = Direction.RIGHT;
+      }
 
       if (nextElement && $(nextElement).hasClass(ClassName.ACTIVE)) {
         this._isSliding = false;
         return;
       }
 
-      var slideEvent = this._triggerSlideEvent(nextElement, directionalClassName);
+      var slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName);
       if (slideEvent.isDefaultPrevented()) {
         return;
       }
@@ -315,12 +341,12 @@ var Carousel = function ($) {
 
       var slidEvent = $.Event(Event.SLID, {
         relatedTarget: nextElement,
-        direction: directionalClassName
+        direction: eventDirectionName
       });
 
       if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.SLIDE)) {
 
-        $(nextElement).addClass(direction);
+        $(nextElement).addClass(orderClassName);
 
         Util.reflow(nextElement);
 
@@ -328,16 +354,14 @@ var Carousel = function ($) {
         $(nextElement).addClass(directionalClassName);
 
         $(activeElement).one(Util.TRANSITION_END, function () {
-          $(nextElement).removeClass(directionalClassName).removeClass(direction);
-
-          $(nextElement).addClass(ClassName.ACTIVE);
+          $(nextElement).removeClass(directionalClassName + ' ' + orderClassName).addClass(ClassName.ACTIVE);
 
-          $(activeElement).removeClass(ClassName.ACTIVE).removeClass(direction).removeClass(directionalClassName);
+          $(activeElement).removeClass(ClassName.ACTIVE + ' ' + orderClassName + ' ' + directionalClassName);
 
-          _this2._isSliding = false;
+          _this3._isSliding = false;
 
           setTimeout(function () {
-            return $(_this2._element).trigger(slidEvent);
+            return $(_this3._element).trigger(slidEvent);
           }, 0);
         }).emulateTransitionEnd(TRANSITION_DURATION);
       } else {
diff --git a/js/dist/carousel.js.map b/js/dist/carousel.js.map
index 4aaa3b248..f1adc4d0d 100644
--- a/js/dist/carousel.js.map
+++ b/js/dist/carousel.js.map
@@ -1 +1 @@
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): carousel.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Carousel = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'carousel'\n  const VERSION             = '4.0.0-alpha.4'\n  const DATA_KEY            = 'bs.carousel'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 600\n  const ARROW_LEFT_KEYCODE  = 37 // KeyboardEvent.which value for left arrow key\n  const ARROW_RIGHT_KEYCODE = 39 // KeyboardEvent.which value for right arrow key\n\n  const Default = {\n    interval : 5000,\n    keyboard : true,\n    slide    : false,\n    pause    : 'hover',\n    wrap     : true\n  }\n\n  const DefaultType = {\n    interval : '(number|boolean)',\n    keyboard : 'boolean',\n    slide    : '(boolean|string)',\n    pause    : '(string|boolean)',\n    wrap     : 'boolean'\n  }\n\n  const Direction = {\n    NEXT     : 'next',\n    PREVIOUS : 'prev'\n  }\n\n  const Event = {\n    SLIDE          : `slide${EVENT_KEY}`,\n    SLID           : `slid${EVENT_KEY}`,\n    KEYDOWN        : `keydown${EVENT_KEY}`,\n    MOUSEENTER     : `mouseenter${EVENT_KEY}`,\n    MOUSELEAVE     : `mouseleave${EVENT_KEY}`,\n    LOAD_DATA_API  : `load${EVENT_KEY}${DATA_API_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    CAROUSEL : 'carousel',\n    ACTIVE   : 'active',\n    SLIDE    : 'slide',\n    RIGHT    : 'right',\n    LEFT     : 'left',\n    ITEM     : 'carousel-item'\n  }\n\n  const Selector = {\n    ACTIVE      : '.active',\n    ACTIVE_ITEM : '.active.carousel-item',\n    ITEM        : '.carousel-item',\n    NEXT_PREV   : '.next, .prev',\n    INDICATORS  : '.carousel-indicators',\n    DATA_SLIDE  : '[data-slide], [data-slide-to]',\n    DATA_RIDE   : '[data-ride=\"carousel\"]'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Carousel {\n\n    constructor(element, config) {\n      this._items             = null\n      this._interval          = null\n      this._activeElement     = null\n\n      this._isPaused          = false\n      this._isSliding         = false\n\n      this._config            = this._getConfig(config)\n      this._element           = $(element)[0]\n      this._indicatorsElement = $(this._element).find(Selector.INDICATORS)[0]\n\n      this._addEventListeners()\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    next() {\n      if (!this._isSliding) {\n        this._slide(Direction.NEXT)\n      }\n    }\n\n    nextWhenVisible() {\n      // Don't call next when the page isn't visible\n      if (!document.hidden) {\n        this.next()\n      }\n    }\n\n    prev() {\n      if (!this._isSliding) {\n        this._slide(Direction.PREVIOUS)\n      }\n    }\n\n    pause(event) {\n      if (!event) {\n        this._isPaused = true\n      }\n\n      if ($(this._element).find(Selector.NEXT_PREV)[0] &&\n        Util.supportsTransitionEnd()) {\n        Util.triggerTransitionEnd(this._element)\n        this.cycle(true)\n      }\n\n      clearInterval(this._interval)\n      this._interval = null\n    }\n\n    cycle(event) {\n      if (!event) {\n        this._isPaused = false\n      }\n\n      if (this._interval) {\n        clearInterval(this._interval)\n        this._interval = null\n      }\n\n      if (this._config.interval && !this._isPaused) {\n        this._interval = setInterval(\n          $.proxy(document.visibilityState ? this.nextWhenVisible : this.next, this), this._config.interval\n        )\n      }\n    }\n\n    to(index) {\n      this._activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0]\n\n      let activeIndex = this._getItemIndex(this._activeElement)\n\n      if (index > (this._items.length - 1) || index < 0) {\n        return\n      }\n\n      if (this._isSliding) {\n        $(this._element).one(Event.SLID, () => this.to(index))\n        return\n      }\n\n      if (activeIndex === index) {\n        this.pause()\n        this.cycle()\n        return\n      }\n\n      let direction = index > activeIndex ?\n        Direction.NEXT :\n        Direction.PREVIOUS\n\n      this._slide(direction, this._items[index])\n    }\n\n    dispose() {\n      $(this._element).off(EVENT_KEY)\n      $.removeData(this._element, DATA_KEY)\n\n      this._items             = null\n      this._config            = null\n      this._element           = null\n      this._interval          = null\n      this._isPaused          = null\n      this._isSliding         = null\n      this._activeElement     = null\n      this._indicatorsElement = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n      Util.typeCheckConfig(NAME, config, DefaultType)\n      return config\n    }\n\n    _addEventListeners() {\n      if (this._config.keyboard) {\n        $(this._element)\n          .on(Event.KEYDOWN, $.proxy(this._keydown, this))\n      }\n\n      if (this._config.pause === 'hover' &&\n        !('ontouchstart' in document.documentElement)) {\n        $(this._element)\n          .on(Event.MOUSEENTER, $.proxy(this.pause, this))\n          .on(Event.MOUSELEAVE, $.proxy(this.cycle, this))\n      }\n    }\n\n    _keydown(event) {\n      event.preventDefault()\n\n      if (/input|textarea/i.test(event.target.tagName)) {\n        return\n      }\n\n      switch (event.which) {\n        case ARROW_LEFT_KEYCODE:\n          this.prev()\n          break\n        case ARROW_RIGHT_KEYCODE:\n          this.next()\n          break\n        default:\n          return\n      }\n    }\n\n    _getItemIndex(element) {\n      this._items = $.makeArray($(element).parent().find(Selector.ITEM))\n      return this._items.indexOf(element)\n    }\n\n    _getItemByDirection(direction, activeElement) {\n      let isNextDirection = direction === Direction.NEXT\n      let isPrevDirection = direction === Direction.PREVIOUS\n      let activeIndex     = this._getItemIndex(activeElement)\n      let lastItemIndex   = (this._items.length - 1)\n      let isGoingToWrap   = (isPrevDirection && activeIndex === 0) ||\n                            (isNextDirection && activeIndex === lastItemIndex)\n\n      if (isGoingToWrap && !this._config.wrap) {\n        return activeElement\n      }\n\n      let delta     = direction === Direction.PREVIOUS ? -1 : 1\n      let itemIndex = (activeIndex + delta) % this._items.length\n\n      return itemIndex === -1 ?\n        this._items[this._items.length - 1] : this._items[itemIndex]\n    }\n\n\n    _triggerSlideEvent(relatedTarget, directionalClassname) {\n      let slideEvent = $.Event(Event.SLIDE, {\n        relatedTarget,\n        direction: directionalClassname\n      })\n\n      $(this._element).trigger(slideEvent)\n\n      return slideEvent\n    }\n\n    _setActiveIndicatorElement(element) {\n      if (this._indicatorsElement) {\n        $(this._indicatorsElement)\n          .find(Selector.ACTIVE)\n          .removeClass(ClassName.ACTIVE)\n\n        let nextIndicator = this._indicatorsElement.children[\n          this._getItemIndex(element)\n        ]\n\n        if (nextIndicator) {\n          $(nextIndicator).addClass(ClassName.ACTIVE)\n        }\n      }\n    }\n\n    _slide(direction, element) {\n      let activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0]\n      let nextElement   = element || activeElement &&\n        this._getItemByDirection(direction, activeElement)\n\n      let isCycling = Boolean(this._interval)\n\n      let directionalClassName = direction === Direction.NEXT ?\n        ClassName.LEFT :\n        ClassName.RIGHT\n\n      if (nextElement && $(nextElement).hasClass(ClassName.ACTIVE)) {\n        this._isSliding = false\n        return\n      }\n\n      let slideEvent = this._triggerSlideEvent(nextElement, directionalClassName)\n      if (slideEvent.isDefaultPrevented()) {\n        return\n      }\n\n      if (!activeElement || !nextElement) {\n        // some weirdness is happening, so we bail\n        return\n      }\n\n      this._isSliding = true\n\n      if (isCycling) {\n        this.pause()\n      }\n\n      this._setActiveIndicatorElement(nextElement)\n\n      let slidEvent = $.Event(Event.SLID, {\n        relatedTarget: nextElement,\n        direction: directionalClassName\n      })\n\n      if (Util.supportsTransitionEnd() &&\n        $(this._element).hasClass(ClassName.SLIDE)) {\n\n        $(nextElement).addClass(direction)\n\n        Util.reflow(nextElement)\n\n        $(activeElement).addClass(directionalClassName)\n        $(nextElement).addClass(directionalClassName)\n\n        $(activeElement)\n          .one(Util.TRANSITION_END, () => {\n            $(nextElement)\n              .removeClass(directionalClassName)\n              .removeClass(direction)\n\n            $(nextElement).addClass(ClassName.ACTIVE)\n\n            $(activeElement)\n              .removeClass(ClassName.ACTIVE)\n              .removeClass(direction)\n              .removeClass(directionalClassName)\n\n            this._isSliding = false\n\n            setTimeout(() => $(this._element).trigger(slidEvent), 0)\n\n          })\n          .emulateTransitionEnd(TRANSITION_DURATION)\n\n      } else {\n        $(activeElement).removeClass(ClassName.ACTIVE)\n    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.on(Event.CLICK_DATA_API, Selector.DATA_SLIDE, Carousel._dataApiClickHandler)\n\n  $(window).on(Event.LOAD_DATA_API, () => {\n    $(Selector.DATA_RIDE).each(function () {\n      let $carousel = $(this)\n      Carousel._jQueryInterface.call($carousel, $carousel.data())\n    })\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Carousel._jQueryInterface\n  $.fn[NAME].Constructor = Carousel\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Carousel._jQueryInterface\n  }\n\n  return Carousel\n\n})(jQuery)\n\nexport default Carousel\n"]}
\ No newline at end of file
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): carousel.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Carousel = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'carousel'\n  const VERSION             = '4.0.0-alpha.5'\n  const DATA_KEY            = 'bs.carousel'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 600\n  const ARROW_LEFT_KEYCODE  = 37 // KeyboardEvent.which value for left arrow key\n  const ARROW_RIGHT_KEYCODE = 39 // KeyboardEvent.which value for right arrow key\n\n  const Default = {\n    interval : 5000,\n    keyboard : true,\n    slide    : false,\n    pause    : 'hover',\n    wrap     : true\n  }\n\n  const DefaultType = {\n    interval : '(number|boolean)',\n    keyboard : 'boolean',\n    slide    : '(boolean|string)',\n    pause    : '(string|boolean)',\n    wrap     : 'boolean'\n  }\n\n  const Direction = {\n    NEXT     : 'next',\n    PREV     : 'prev',\n    LEFT     : 'left',\n    RIGHT    : 'right'\n  }\n\n  const Event = {\n    SLIDE          : `slide${EVENT_KEY}`,\n    SLID           : `slid${EVENT_KEY}`,\n    KEYDOWN        : `keydown${EVENT_KEY}`,\n    MOUSEENTER     : `mouseenter${EVENT_KEY}`,\n    MOUSELEAVE     : `mouseleave${EVENT_KEY}`,\n    LOAD_DATA_API  : `load${EVENT_KEY}${DATA_API_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    CAROUSEL : 'carousel',\n    ACTIVE   : 'active',\n    SLIDE    : 'slide',\n    RIGHT    : 'carousel-item-right',\n    LEFT     : 'carousel-item-left',\n    NEXT     : 'carousel-item-next',\n    PREV     : 'carousel-item-prev',\n    ITEM     : 'carousel-item'\n  }\n\n  const Selector = {\n    ACTIVE      : '.active',\n    ACTIVE_ITEM : '.active.carousel-item',\n    ITEM        : '.carousel-item',\n    NEXT_PREV   : '.carousel-item-next, .carousel-item-prev',\n    INDICATORS  : '.carousel-indicators',\n    DATA_SLIDE  : '[data-slide], [data-slide-to]',\n    DATA_RIDE   : '[data-ride=\"carousel\"]'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Carousel {\n\n    constructor(element, config) {\n      this._items             = null\n      this._interval          = null\n      this._activeElement     = null\n\n      this._isPaused          = false\n      this._isSliding         = false\n\n      this._config            = this._getConfig(config)\n      this._element           = $(element)[0]\n      this._indicatorsElement = $(this._element).find(Selector.INDICATORS)[0]\n\n      this._addEventListeners()\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    next() {\n      if (this._isSliding) {\n        throw new Error('Carousel is sliding')\n      }\n      this._slide(Direction.NEXT)\n    }\n\n    nextWhenVisible() {\n      // Don't call next when the page isn't visible\n      if (!document.hidden) {\n        this.next()\n      }\n    }\n\n    prev() {\n      if (this._isSliding) {\n        throw new Error('Carousel is sliding')\n      }\n      this._slide(Direction.PREVIOUS)\n    }\n\n    pause(event) {\n      if (!event) {\n        this._isPaused = true\n      }\n\n      if ($(this._element).find(Selector.NEXT_PREV)[0] &&\n        Util.supportsTransitionEnd()) {\n        Util.triggerTransitionEnd(this._element)\n        this.cycle(true)\n      }\n\n      clearInterval(this._interval)\n      this._interval = null\n    }\n\n    cycle(event) {\n      if (!event) {\n        this._isPaused = false\n      }\n\n      if (this._interval) {\n        clearInterval(this._interval)\n        this._interval = null\n      }\n\n      if (this._config.interval && !this._isPaused) {\n        this._interval = setInterval(\n          (document.visibilityState ? this.nextWhenVisible : this.next).bind(this),\n          this._config.interval\n        )\n      }\n    }\n\n    to(index) {\n      this._activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0]\n\n      const activeIndex = this._getItemIndex(this._activeElement)\n\n      if (index > this._items.length - 1 || index < 0) {\n        return\n      }\n\n      if (this._isSliding) {\n        $(this._element).one(Event.SLID, () => this.to(index))\n        return\n      }\n\n      if (activeIndex === index) {\n        this.pause()\n        this.cycle()\n        return\n      }\n\n      const direction = index > activeIndex ?\n        Direction.NEXT :\n        Direction.PREVIOUS\n\n      this._slide(direction, this._items[index])\n    }\n\n    dispose() {\n      $(this._element).off(EVENT_KEY)\n      $.removeData(this._element, DATA_KEY)\n\n      this._items             = null\n      this._config            = null\n      this._element           = null\n      this._interval          = null\n      this._isPaused          = null\n      this._isSliding         = null\n      this._activeElement     = null\n      this._indicatorsElement = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n      Util.typeCheckConfig(NAME, config, DefaultType)\n      return config\n    }\n\n    _addEventListeners() {\n      if (this._config.keyboard) {\n        $(this._element)\n          .on(Event.KEYDOWN, (event) => this._keydown(event))\n      }\n\n      if (this._config.pause === 'hover' &&\n        !('ontouchstart' in document.documentElement)) {\n        $(this._element)\n          .on(Event.MOUSEENTER, (event) => this.pause(event))\n          .on(Event.MOUSELEAVE, (event) => this.cycle(event))\n      }\n    }\n\n    _keydown(event) {\n      if (/input|textarea/i.test(event.target.tagName)) {\n        return\n      }\n\n      switch (event.which) {\n        case ARROW_LEFT_KEYCODE:\n          event.preventDefault()\n          this.prev()\n          break\n        case ARROW_RIGHT_KEYCODE:\n          event.preventDefault()\n          this.next()\n          break\n        default:\n          return\n      }\n    }\n\n    _getItemIndex(element) {\n      this._items = $.makeArray($(element).parent().find(Selector.ITEM))\n      return this._items.indexOf(element)\n    }\n\n    _getItemByDirection(direction, activeElement) {\n      const isNextDirection = direction === Direction.NEXT\n      const isPrevDirection = direction === Direction.PREVIOUS\n      const activeIndex     = this._getItemIndex(activeElement)\n      const lastItemIndex   = this._items.length - 1\n      const isGoingToWrap   = isPrevDirection && activeIndex === 0 ||\n                              isNextDirection && activeIndex === lastItemIndex\n\n      if (isGoingToWrap && !this._config.wrap) {\n        return activeElement\n      }\n\n      const delta     = direction === Direction.PREVIOUS ? -1 : 1\n      const itemIndex = (activeIndex + delta) % this._items.length\n\n      return itemIndex === -1 ?\n        this._items[this._items.length - 1] : this._items[itemIndex]\n    }\n\n\n    _triggerSlideEvent(relatedTarget, eventDirectionName) {\n      const slideEvent = $.Event(Event.SLIDE, {\n        relatedTarget,\n        direction: eventDirectionName\n      })\n\n      $(this._element).trigger(slideEvent)\n\n      return slideEvent\n    }\n\n    _setActiveIndicatorElement(element) {\n      if (this._indicatorsElement) {\n        $(this._indicatorsElement)\n          .find(Selector.ACTIVE)\n          .removeClass(ClassName.ACTIVE)\n\n        const nextIndicator = this._indicatorsElement.children[\n          this._getItemIndex(element)\n        ]\n\n        if (nextIndicator) {\n          $(nextIndicator).addClass(ClassName.ACTIVE)\n        }\n      }\n    }\n\n    _slide(direction, element) {\n      const activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0]\n      const nextElement   = element || activeElement &&\n        this._getItemByDirection(direction, activeElement)\n\n      const isCycling = Boolean(this._interval)\n\n      let directionalClassName\n      let orderClassName\n      let eventDirectionName\n\n      if (direction === Direction.NEXT) {\n        directionalClassName = ClassName.LEFT\n        orderClassName = ClassName.NEXT\n        eventDirectionName = Direction.LEFT\n      } else {\n        directionalClassName = ClassName.RIGHT\n        orderClassName = ClassName.PREV\n        eventDirectionName = Direction.RIGHT\n      }\n\n      if (nextElement && $(nextElement).hasClass(ClassName.ACTIVE)) {\n        this._isSliding = false\n        return\n      }\n\n      const slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName)\n      if (slideEvent.isDefaultPrevented()) {\n        return\n      }\n\n      if (!activeElement || !nextElement) {\n        // some weirdness is happening, so we bail\n        return\n      }\n\n      this._isSliding = true\n\n      if (isCycling) {\n        this.pause()\n      }\n\n      this._setActiveIndicatorElement(nextElement)\n\n      const slidEvent = $.Event(Event.SLID, {\n        relatedTarget: nextElement,\n        direction: eventDirectionName\n      })\n\n      if (Util.supportsTransitionEnd() &&\n        $(this._element).hasClass(ClassName.SLIDE)) {\n\n        $(nextElement).addClass(orderClassName)\n\n        Util.reflow(nextElement)\n\n        $(activeElement).addClass(directionalClassName)\n        $(nextElement).addClass(directionalClassName)\n\n        $(activeElement)\n          .one(Util.TRANSITION_END, () => {\n            $(nextElement)\n              .removeClass(`${directionalClassName} ${orderClassName}`)\n              .addClass(ClassName.ACTIVE)\n\n            $(activeElement).removeClass(`${ClassName.ACTIVE} ${orderClassName} ${directionalClassName}`)\n\n            this._isSliding = false\n\n            setTimeout(() => $(this._element).trigger(slidEvent), 0)\n\n          })\n          .emulateTransitionEnd(TRANSITION_DURATION)\n\n      } else {\n        $(activeElement).removeClass(ClassName.ACTIVE)\n        $(nextElement).addClass(ClassName.ACTIVE)\n\n        this._isSliding = false\n        $(this._element).trigger(slidEvent)\n      }\n\n      if (isCycling) {\n        this.cycle()\n      }\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data      = $(this).data(DATA_KEY)\n        const _config = $.extend({}, Default, $(this).data())\n\n        if (typeof config === 'object') {\n          $.extend(_config, config)\n        }\n\n        const action = typeof config === 'string' ? config : _config.slide\n\n        if (!data) {\n          data = new Carousel(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'number') {\n          data.to(config)\n        } else if (typeof action === 'string') {\n          if (data[action] === undefined) {\n            throw new Error(`No method named \"${action}\"`)\n          }\n          data[action]()\n        } else if (_config.interval) {\n          data.pause()\n          data.cycle()\n        }\n      })\n    }\n\n    static _dataApiClickHandler(event) {\n      const selector = Util.getSelectorFromElement(this)\n\n      if (!selector) {\n        return\n      }\n\n      const target = $(selector)[0]\n\n      if (!target || !$(target).hasClass(ClassName.CAROUSEL)) {\n        return\n      }\n\n      const config     = $.extend({}, $(target).data(), $(this).data())\n      const slideIndex = this.getAttribute('data-slide-to')\n\n      if (slideIndex) {\n        config.interval = false\n      }\n\n      Carousel._jQueryInterface.call($(target), config)\n\n      if (slideIndex) {\n        $(target).data(DATA_KEY).to(slideIndex)\n      }\n\n      event.preventDefault()\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document)\n    .on(Event.CLICK_DATA_API, Selector.DATA_SLIDE, Carousel._dataApiClickHandler)\n\n  $(window).on(Event.LOAD_DATA_API, () => {\n    $(Selector.DATA_RIDE).each(function () {\n      const $carousel = $(this)\n      Carousel._jQueryInterface.call($carousel, $carousel.data())\n    })\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Carousel._jQueryInterface\n  $.fn[NAME].Constructor = Carousel\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Carousel._jQueryInterface\n  }\n\n  return Carousel\n\n})(jQuery)\n\nexport default Carousel\n"]}
\ No newline at end of file
diff --git a/js/dist/collapse.js b/js/dist/collapse.js
index 8e4f84f2a..000c9256e 100644
--- a/js/dist/collapse.js
+++ b/js/dist/collapse.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): collapse.js
+ * Bootstrap (v4.0.0-alpha.5): collapse.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var Collapse = function ($) {
    */
 
   var NAME = 'collapse';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.collapse';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -46,7 +46,7 @@ var Collapse = function ($) {
   };
 
   var ClassName = {
-    IN: 'in',
+    SHOW: 'show',
     COLLAPSE: 'collapse',
     COLLAPSING: 'collapsing',
     COLLAPSED: 'collapsed'
@@ -58,7 +58,7 @@ var Collapse = function ($) {
   };
 
   var Selector = {
-    ACTIVES: '.panel > .in, .panel > .collapsing',
+    ACTIVES: '.card > .show, .card > .collapsing',
     DATA_TOGGLE: '[data-toggle="collapse"]'
   };
 
@@ -93,7 +93,7 @@ var Collapse = function ($) {
     // public
 
     Collapse.prototype.toggle = function toggle() {
-      if ($(this._element).hasClass(ClassName.IN)) {
+      if ($(this._element).hasClass(ClassName.SHOW)) {
         this.hide();
       } else {
         this.show();
@@ -103,7 +103,11 @@ var Collapse = function ($) {
     Collapse.prototype.show = function show() {
       var _this = this;
 
-      if (this._isTransitioning || $(this._element).hasClass(ClassName.IN)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning');
+      }
+
+      if ($(this._element).hasClass(ClassName.SHOW)) {
         return;
       }
 
@@ -111,7 +115,7 @@ var Collapse = function ($) {
       var activesData = void 0;
 
       if (this._parent) {
-        actives = $.makeArray($(Selector.ACTIVES));
+        actives = $.makeArray($(this._parent).find(Selector.ACTIVES));
         if (!actives.length) {
           actives = null;
         }
@@ -151,7 +155,7 @@ var Collapse = function ($) {
       this.setTransitioning(true);
 
       var complete = function complete() {
-        $(_this._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).addClass(ClassName.IN);
+        $(_this._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).addClass(ClassName.SHOW);
 
         _this._element.style[dimension] = '';
 
@@ -176,7 +180,11 @@ var Collapse = function ($) {
     Collapse.prototype.hide = function hide() {
       var _this2 = this;
 
-      if (this._isTransitioning || !$(this._element).hasClass(ClassName.IN)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning');
+      }
+
+      if (!$(this._element).hasClass(ClassName.SHOW)) {
         return;
       }
 
@@ -193,7 +201,7 @@ var Collapse = function ($) {
 
       Util.reflow(this._element);
 
-      $(this._element).addClass(ClassName.COLLAPSING).removeClass(ClassName.COLLAPSE).removeClass(ClassName.IN);
+      $(this._element).addClass(ClassName.COLLAPSING).removeClass(ClassName.COLLAPSE).removeClass(ClassName.SHOW);
 
       this._element.setAttribute('aria-expanded', false);
 
@@ -261,7 +269,7 @@ var Collapse = function ($) {
 
     Collapse.prototype._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
       if (element) {
-        var isOpen = $(element).hasClass(ClassName.IN);
+        var isOpen = $(element).hasClass(ClassName.SHOW);
         element.setAttribute('aria-expanded', isOpen);
 
         if (triggerArray.length) {
diff --git a/js/dist/collapse.js.map b/js/dist/collapse.js.map
index 2b3f87438..806102727 100644
--- a/js/dist/collapse.js.map
+++ b/js/dist/collapse.js.map
@@ -1 +1 @@
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): collapse.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Collapse = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'collapse'\n  const VERSION             = '4.0.0-alpha.4'\n  const DATA_KEY            = 'bs.collapse'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 600\n\n  const Default = {\n    toggle : true,\n    parent : ''\n  }\n\n  const DefaultType = {\n    toggle : 'boolean',\n    parent : 'string'\n  }\n\n  const Event = {\n    SHOW           : `show${EVENT_KEY}`,\n    SHOWN          : `shown${EVENT_KEY}`,\n    HIDE           : `hide${EVENT_KEY}`,\n    HIDDEN         : `hidden${EVENT_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    IN         : 'in',\n    COLLAPSE   : 'collapse',\n    COLLAPSING : 'collapsing',\n    COLLAPSED  : 'collapsed'\n  }\n\n  const Dimension = {\n    WIDTH  : 'width',\n    HEIGHT : 'height'\n  }\n\n  const Selector = {\n    ACTIVES     : '.panel > .in, .panel > .collapsing',\n    DATA_TOGGLE : '[data-toggle=\"collapse\"]'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Collapse {\n\n    constructor(element, config) {\n      this._isTransitioning = false\n      this._element         = element\n      this._config          = this._getConfig(config)\n      this._triggerArray    = $.makeArray($(\n        `[data-toggle=\"collapse\"][href=\"#${element.id}\"],` +\n        `[data-toggle=\"collapse\"][data-target=\"#${element.id}\"]`\n      ))\n\n      this._parent = this._config.parent ? this._getParent() : null\n\n      if (!this._config.parent) {\n        this._addAriaAndCollapsedClass(this._element, this._triggerArray)\n      }\n\n      if (this._config.toggle) {\n        this.toggle()\n      }\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    toggle() {\n      if ($(this._element).hasClass(ClassName.IN)) {\n        this.hide()\n      } else {\n        this.show()\n      }\n    }\n\n    show() {\n      if (this._isTransitioning ||\n        $(this._element).hasClass(ClassName.IN)) {\n        return\n      }\n\n      let actives\n      let activesData\n\n      if (this._parent) {\n        actives = $.makeArray($(Selector.ACTIVES))\n        if (!actives.length) {\n          actives = null\n        }\n      }\n\n      if (actives) {\n        activesData = $(actives).data(DATA_KEY)\n        if (activesData && activesData._isTransitioning) {\n          return\n        }\n      }\n\n      let startEvent = $.Event(Event.SHOW)\n      $(this._element).trigger(startEvent)\n      if (startEvent.isDefaultPrevented()) {\n        return\n      }\n\n      if (actives) {\n        Collapse._jQueryInterface.call($(actives), 'hide')\n        if (!activesData) {\n          $(actives).data(DATA_KEY, null)\n        }\n      }\n\n      let dimension = this._getDimension()\n\n      $(this._element)\n        .removeClass(ClassName.COLLAPSE)\n        .addClass(ClassName.COLLAPSING)\n\n      this._element.style[dimension] = 0\n      this._element.setAttribute('aria-expanded', true)\n\n      if (this._triggerArray.length) {\n        $(this._triggerArray)\n          .removeClass(ClassName.COLLAPSED)\n          .attr('aria-expanded', true)\n      }\n\n      this.setTransitioning(true)\n\n      let complete = () => {\n        $(this._element)\n          .removeClass(ClassName.COLLAPSING)\n          .addClass(ClassName.COLLAPSE)\n          .addClass(ClassName.IN)\n\n        this._element.style[dimension] = ''\n\n        this.setTransitioning(false)\n\n        $(this._element).trigger(Event.SHOWN)\n      }\n\n      if (!Util.supportsTransitionEnd()) {\n        complete()\n        return\n      }\n\n      let capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1)\n      let scrollSize           = `scroll${capitalizedDimension}`\n\n      $(this._element)\n        .one(Util.TRANSITION_END, complete)\n        .emulateTransitionEnd(TRANSITION_DURATION)\n\n      this._element.style[dimension] = `${this._element[scrollSize]}px`\n    }\n\n    hide() {\n      if (this._isTransitioning ||\n        !$(this._element).hasClass(ClassName.IN)) {\n        return\n      }\n\n      let startEvent = $.Event(Event.HIDE)\n      $(this._element).trigger(startEvent)\n      if (startEvent.isDefaultPrevented()) {\n        return\n      }\n\n      let dimension       = this._getDimension()\n      let offsetDimension = dimension === Dimension.WIDTH ?\n        'offsetWidth' : 'offsetHeight'\n\n      this._element.style[dimension] = `${this._element[offsetDimension]}px`\n\n      Util.reflow(this._element)\n\n      $(this._element)\n        .addClass(ClassName.COLLAPSING)\n        .removeClass(ClassName.COLLAPSE)\n        .removeClass(ClassName.IN)\n\n      this._element.setAttribute('aria-expanded', false)\n\n      if (this._triggerArray.length) {\n        $(this._triggerArray)\n          .addClass(ClassName.COLLAPSED)\n          .attr('aria-expanded', false)\n      }\n\n      this.setTransitioning(true)\n\n      let complete = () => {\n        this.setTransitioning(false)\n        $(this._element)\n          .removeClass(ClassName.COLLAPSING)\n          .addClass(ClassName.COLLAPSE)\n          .trigger(Event.HIDDEN)\n      }\n\n      this._element.style[dimension] = ''\n\n      if (!Util.supportsTransitionEnd()) {\n        complete()\n        return\n      }\n\n      $(this._element)\n        .one(Util.TRANSITION_END, complete)\n        .emulateTransitionEnd(TRANSITION_DURATION)\n    }\n\n    setTransitioning(isTransitioning) {\n      this._isTransitioning = isTransitioning\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n\n      this._config          = null\n      this._parent          = null\n      this._element         = null\n      this._triggerArray    = null\n      this._isTransitioning = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n      config.toggle = Boolean(config.toggle) // coerce string values\n      Util.typeCheckConfig(NAME, config, DefaultType)\n      return config\n    }\n\n    _getDimension() {\n      let hasWidth = $(this._element).hasClass(Dimension.WIDTH)\n      return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT\n    }\n\n    _getParent() {\n      let parent   = $(this._config.parent)[0]\n      let selector =\n        `[data-toggle=\"collapse\"][data-parent=\"${this._config.parent}\"]`\n\n      $(parent).find(selector).each((i, element) => {\n        this._addAriaAndCollapsedClass(\n          Collapse._getTargetFromElement(element),\n          [element]\n        )\n      })\n\n      return parent\n    }\n\n    _addAriaAndCollapsedClass(element, triggerArray) {\n      if (element) {\n        let isOpen = $(element).hasClass(ClassName.IN)\n        element.setAttribute('aria-expanded', isOpen)\n\n        if (triggerArray.length) {\n          $(triggerArray)\n            .toggleClass(ClassName.COLLAPSED, !isOpen)\n            .attr('aria-expanded', isOpen)\n        }\n      }\n    }\n\n\n    // static\n\n    static _getTargetFromElement(element) {\n      let selector = Util.getSelectorFromElement(element)\n      return selector ? $(selector)[0] : null\n    }\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let $this   = $(this)\n        let data    = $this.data(DATA_KEY)\n        let _config = $.extend(\n          {},\n          Default,\n          $this.data(),\n          typeof config === 'object' && config\n        )\n\n        if (!data && _config.toggle && /show|hide/.test(config)) {\n          _config.toggle = false\n        }\n\n        if (!data) {\n          data = new Collapse(this, _config)\n          $this.data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n    event.preventDefault()\n\n    let target = Collapse._getTargetFromElement(this)\n    let data   = $(target).data(DATA_KEY)\n    let config = data ? 'toggle' : $(this).data()\n\n    Collapse._jQueryInterface.call($(target), config)\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Collapse._jQueryInterface\n  $.fn[NAME].Constructor = Collapse\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Collapse._jQueryInterface\n  }\n\n  return Collapse\n\n})(jQuery)\n\nexport default Collapse\n"]}
\ No newline at end of file
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): collapse.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Collapse = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'collapse'\n  const VERSION             = '4.0.0-alpha.5'\n  const DATA_KEY            = 'bs.collapse'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 600\n\n  const Default = {\n    toggle : true,\n    parent : ''\n  }\n\n  const DefaultType = {\n    toggle : 'boolean',\n    parent : 'string'\n  }\n\n  const Event = {\n    SHOW           : `show${EVENT_KEY}`,\n    SHOWN          : `shown${EVENT_KEY}`,\n    HIDE           : `hide${EVENT_KEY}`,\n    HIDDEN         : `hidden${EVENT_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    SHOW       : 'show',\n    COLLAPSE   : 'collapse',\n    COLLAPSING : 'collapsing',\n    COLLAPSED  : 'collapsed'\n  }\n\n  const Dimension = {\n    WIDTH  : 'width',\n    HEIGHT : 'height'\n  }\n\n  const Selector = {\n    ACTIVES     : '.card > .show, .card > .collapsing',\n    DATA_TOGGLE : '[data-toggle=\"collapse\"]'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Collapse {\n\n    constructor(element, config) {\n      this._isTransitioning = false\n      this._element         = element\n      this._config          = this._getConfig(config)\n      this._triggerArray    = $.makeArray($(\n        `[data-toggle=\"collapse\"][href=\"#${element.id}\"],` +\n        `[data-toggle=\"collapse\"][data-target=\"#${element.id}\"]`\n      ))\n\n      this._parent = this._config.parent ? this._getParent() : null\n\n      if (!this._config.parent) {\n        this._addAriaAndCollapsedClass(this._element, this._triggerArray)\n      }\n\n      if (this._config.toggle) {\n        this.toggle()\n      }\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    toggle() {\n      if ($(this._element).hasClass(ClassName.SHOW)) {\n        this.hide()\n      } else {\n        this.show()\n      }\n    }\n\n    show() {\n      if (this._isTransitioning) {\n        throw new Error('Collapse is transitioning')\n      }\n\n      if ($(this._element).hasClass(ClassName.SHOW)) {\n        return\n      }\n\n      let actives\n      let activesData\n\n      if (this._parent) {\n        actives = $.makeArray($(this._parent).find(Selector.ACTIVES))\n        if (!actives.length) {\n          actives = null\n        }\n      }\n\n      if (actives) {\n        activesData = $(actives).data(DATA_KEY)\n        if (activesData && activesData._isTransitioning) {\n          return\n        }\n      }\n\n      const startEvent = $.Event(Event.SHOW)\n      $(this._element).trigger(startEvent)\n      if (startEvent.isDefaultPrevented()) {\n        return\n      }\n\n      if (actives) {\n        Collapse._jQueryInterface.call($(actives), 'hide')\n        if (!activesData) {\n          $(actives).data(DATA_KEY, null)\n        }\n      }\n\n      const dimension = this._getDimension()\n\n      $(this._element)\n        .removeClass(ClassName.COLLAPSE)\n        .addClass(ClassName.COLLAPSING)\n\n      this._element.style[dimension] = 0\n      this._element.setAttribute('aria-expanded', true)\n\n      if (this._triggerArray.length) {\n        $(this._triggerArray)\n          .removeClass(ClassName.COLLAPSED)\n          .attr('aria-expanded', true)\n      }\n\n      this.setTransitioning(true)\n\n      const complete = () => {\n        $(this._element)\n          .removeClass(ClassName.COLLAPSING)\n          .addClass(ClassName.COLLAPSE)\n          .addClass(ClassName.SHOW)\n\n        this._element.style[dimension] = ''\n\n        this.setTransitioning(false)\n\n        $(this._element).trigger(Event.SHOWN)\n      }\n\n      if (!Util.supportsTransitionEnd()) {\n        complete()\n        return\n      }\n\n      const capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1)\n      const scrollSize           = `scroll${capitalizedDimension}`\n\n      $(this._element)\n        .one(Util.TRANSITION_END, complete)\n        .emulateTransitionEnd(TRANSITION_DURATION)\n\n      this._element.style[dimension] = `${this._element[scrollSize]}px`\n    }\n\n    hide() {\n      if (this._isTransitioning) {\n        throw new Error('Collapse is transitioning')\n      }\n\n      if (!$(this._element).hasClass(ClassName.SHOW)) {\n        return\n      }\n\n      const startEvent = $.Event(Event.HIDE)\n      $(this._element).trigger(startEvent)\n      if (startEvent.isDefaultPrevented()) {\n        return\n      }\n\n      const dimension       = this._getDimension()\n      const offsetDimension = dimension === Dimension.WIDTH ?\n        'offsetWidth' : 'offsetHeight'\n\n      this._element.style[dimension] = `${this._element[offsetDimension]}px`\n\n      Util.reflow(this._element)\n\n      $(this._element)\n        .addClass(ClassName.COLLAPSING)\n        .removeClass(ClassName.COLLAPSE)\n        .removeClass(ClassName.SHOW)\n\n      this._element.setAttribute('aria-expanded', false)\n\n      if (this._triggerArray.length) {\n        $(this._triggerArray)\n          .addClass(ClassName.COLLAPSED)\n          .attr('aria-expanded', false)\n      }\n\n      this.setTransitioning(true)\n\n      const complete = () => {\n        this.setTransitioning(false)\n        $(this._element)\n          .removeClass(ClassName.COLLAPSING)\n          .addClass(ClassName.COLLAPSE)\n          .trigger(Event.HIDDEN)\n      }\n\n      this._element.style[dimension] = ''\n\n      if (!Util.supportsTransitionEnd()) {\n        complete()\n        return\n      }\n\n      $(this._element)\n        .one(Util.TRANSITION_END, complete)\n        .emulateTransitionEnd(TRANSITION_DURATION)\n    }\n\n    setTransitioning(isTransitioning) {\n      this._isTransitioning = isTransitioning\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n\n      this._config          = null\n      this._parent          = null\n      this._element         = null\n      this._triggerArray    = null\n      this._isTransitioning = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n      config.toggle = Boolean(config.toggle) // coerce string values\n      Util.typeCheckConfig(NAME, config, DefaultType)\n      return config\n    }\n\n    _getDimension() {\n      const hasWidth = $(this._element).hasClass(Dimension.WIDTH)\n      return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT\n    }\n\n    _getParent() {\n      const parent   = $(this._config.parent)[0]\n      const selector =\n        `[data-toggle=\"collapse\"][data-parent=\"${this._config.parent}\"]`\n\n      $(parent).find(selector).each((i, element) => {\n        this._addAriaAndCollapsedClass(\n          Collapse._getTargetFromElement(element),\n          [element]\n        )\n      })\n\n      return parent\n    }\n\n    _addAriaAndCollapsedClass(element, triggerArray) {\n      if (element) {\n        const isOpen = $(element).hasClass(ClassName.SHOW)\n        element.setAttribute('aria-expanded', isOpen)\n\n        if (triggerArray.length) {\n          $(triggerArray)\n            .toggleClass(ClassName.COLLAPSED, !isOpen)\n            .attr('aria-expanded', isOpen)\n        }\n      }\n    }\n\n\n    // static\n\n    static _getTargetFromElement(element) {\n      const selector = Util.getSelectorFromElement(element)\n      return selector ? $(selector)[0] : null\n    }\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        const $this   = $(this)\n        let data      = $this.data(DATA_KEY)\n        const _config = $.extend(\n          {},\n          Default,\n          $this.data(),\n          typeof config === 'object' && config\n        )\n\n        if (!data && _config.toggle && /show|hide/.test(config)) {\n          _config.toggle = false\n        }\n\n        if (!data) {\n          data = new Collapse(this, _config)\n          $this.data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n    event.preventDefault()\n\n    const target = Collapse._getTargetFromElement(this)\n    const data   = $(target).data(DATA_KEY)\n    const config = data ? 'toggle' : $(this).data()\n\n    Collapse._jQueryInterface.call($(target), config)\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Collapse._jQueryInterface\n  $.fn[NAME].Constructor = Collapse\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Collapse._jQueryInterface\n  }\n\n  return Collapse\n\n})(jQuery)\n\nexport default Collapse\n"]}
\ No newline at end of file
diff --git a/js/dist/dropdown.js b/js/dist/dropdown.js
index 9cad7941e..1045b37d0 100644
--- a/js/dist/dropdown.js
+++ b/js/dist/dropdown.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): dropdown.js
+ * Bootstrap (v4.0.0-alpha.5): dropdown.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Dropdown = function ($) {
    */
 
   var NAME = 'dropdown';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.dropdown';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -41,7 +41,7 @@ var Dropdown = function ($) {
   var ClassName = {
     BACKDROP: 'dropdown-backdrop',
     DISABLED: 'disabled',
-    OPEN: 'open'
+    SHOW: 'show'
   };
 
   var Selector = {
@@ -79,7 +79,7 @@ var Dropdown = function ($) {
       }
 
       var parent = Dropdown._getParentFromElement(this);
-      var isActive = $(parent).hasClass(ClassName.OPEN);
+      var isActive = $(parent).hasClass(ClassName.SHOW);
 
       Dropdown._clearMenus();
 
@@ -96,7 +96,9 @@ var Dropdown = function ($) {
         $(dropdown).on('click', Dropdown._clearMenus);
       }
 
-      var relatedTarget = { relatedTarget: this };
+      var relatedTarget = {
+        relatedTarget: this
+      };
       var showEvent = $.Event(Event.SHOW, relatedTarget);
 
       $(parent).trigger(showEvent);
@@ -106,9 +108,9 @@ var Dropdown = function ($) {
       }
 
       this.focus();
-      this.setAttribute('aria-expanded', 'true');
+      this.setAttribute('aria-expanded', true);
 
-      $(parent).toggleClass(ClassName.OPEN);
+      $(parent).toggleClass(ClassName.SHOW);
       $(parent).trigger($.Event(Event.SHOWN, relatedTarget));
 
       return false;
@@ -133,7 +135,8 @@ var Dropdown = function ($) {
         var data = $(this).data(DATA_KEY);
 
         if (!data) {
-          $(this).data(DATA_KEY, data = new Dropdown(this));
+          data = new Dropdown(this);
+          $(this).data(DATA_KEY, data);
         }
 
         if (typeof config === 'string') {
@@ -159,9 +162,11 @@ var Dropdown = function ($) {
 
       for (var i = 0; i < toggles.length; i++) {
         var parent = Dropdown._getParentFromElement(toggles[i]);
-        var relatedTarget = { relatedTarget: toggles[i] };
+        var relatedTarget = {
+          relatedTarget: toggles[i]
+        };
 
-        if (!$(parent).hasClass(ClassName.OPEN)) {
+        if (!$(parent).hasClass(ClassName.SHOW)) {
           continue;
         }
 
@@ -177,7 +182,7 @@ var Dropdown = function ($) {
 
         toggles[i].setAttribute('aria-expanded', 'false');
 
-        $(parent).removeClass(ClassName.OPEN).trigger($.Event(Event.HIDDEN, relatedTarget));
+        $(parent).removeClass(ClassName.SHOW).trigger($.Event(Event.HIDDEN, relatedTarget));
       }
     };
 
@@ -205,7 +210,7 @@ var Dropdown = function ($) {
       }
 
       var parent = Dropdown._getParentFromElement(this);
-      var isActive = $(parent).hasClass(ClassName.OPEN);
+      var isActive = $(parent).hasClass(ClassName.SHOW);
 
       if (!isActive && event.which !== ESCAPE_KEYCODE || isActive && event.which === ESCAPE_KEYCODE) {
 
@@ -218,11 +223,7 @@ var Dropdown = function ($) {
         return;
       }
 
-      var items = $.makeArray($(Selector.VISIBLE_ITEMS));
-
-      items = items.filter(function (item) {
-        return item.offsetWidth || item.offsetHeight;
-      });
+      var items = $(parent).find(Selector.VISIBLE_ITEMS).get();
 
       if (!items.length) {
         return;
diff --git a/js/dist/dropdown.js.map b/js/dist/dropdown.js.map
index 1701b6b83..49230c83e 100644
--- a/js/dist/dropdown.js.map
+++ b/js/dist/dropdown.js.map
@@ -1 +1 @@
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): dropdown.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Dropdown = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                     = 'dropdown'\n  const VERSION                  = '4.0.0-alpha.4'\n  const DATA_KEY                 = 'bs.dropdown'\n  const EVENT_KEY                = `.${DATA_KEY}`\n  const DATA_API_KEY             = '.data-api'\n  const JQUERY_NO_CONFLICT       = $.fn[NAME]\n  const ESCAPE_KEYCODE           = 27 // KeyboardEvent.which value for Escape (Esc) key\n  const ARROW_UP_KEYCODE         = 38 // KeyboardEvent.which value for up arrow key\n  const ARROW_DOWN_KEYCODE       = 40 // KeyboardEvent.which value for down arrow key\n  const RIGHT_MOUSE_BUTTON_WHICH = 3 // MouseEvent.which value for the right button (assuming a right-handed mouse)\n\n  const Event = {\n    HIDE             : `hide${EVENT_KEY}`,\n    HIDDEN           : `hidden${EVENT_KEY}`,\n    SHOW             : `show${EVENT_KEY}`,\n    SHOWN            : `shown${EVENT_KEY}`,\n    CLICK            : `click${EVENT_KEY}`,\n    CLICK_DATA_API   : `click${EVENT_KEY}${DATA_API_KEY}`,\n    KEYDOWN_DATA_API : `keydown${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    BACKDROP : 'dropdown-backdrop',\n    DISABLED : 'disabled',\n    OPEN     : 'open'\n  }\n\n  const Selector = {\n    BACKDROP      : '.dropdown-backdrop',\n    DATA_TOGGLE   : '[data-toggle=\"dropdown\"]',\n    FORM_CHILD    : '.dropdown form',\n    ROLE_MENU     : '[role=\"menu\"]',\n    ROLE_LISTBOX  : '[role=\"listbox\"]',\n    NAVBAR_NAV    : '.navbar-nav',\n    VISIBLE_ITEMS : '[role=\"menu\"] li:not(.disabled) a, '\n                  + '[role=\"listbox\"] li:not(.disabled) a'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Dropdown {\n\n    constructor(element) {\n      this._element = element\n\n      this._addEventListeners()\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    toggle() {\n      if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {\n        return false\n      }\n\n      let parent   = Dropdown._getParentFromElement(this)\n      let isActive = $(parent).hasClass(ClassName.OPEN)\n\n      Dropdown._clearMenus()\n\n      if (isActive) {\n        return false\n      }\n\n      if ('ontouchstart' in document.documentElement &&\n         (!$(parent).closest(Selector.NAVBAR_NAV).length)) {\n\n        // if mobile we use a backdrop because click events don't delegate\n        let dropdown       = document.createElement('div')\n        dropdown.className = ClassName.BACKDROP\n        $(dropdown).insertBefore(this)\n        $(dropdown).on('click', Dropdown._clearMenus)\n      }\n\n      let relatedTarget = { relatedTarget : this }\n      let showEvent     = $.Event(Event.SHOW, relatedTarget)\n\n      $(parent).trigger(showEvent)\n\n      if (showEvent.isDefaultPrevented()) {\n        return false\n      }\n\n      this.focus()\n      this.setAttribute('aria-expanded', 'true')\n\n      $(parent).toggleClass(ClassName.OPEN)\n      $(parent).trigger($.Event(Event.SHOWN, relatedTarget))\n\n      return false\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      $(this._element).off(EVENT_KEY)\n      this._element = null\n    }\n\n\n    // private\n\n    _addEventListeners() {\n      $(this._element).on(Event.CLICK, this.toggle)\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data  = $(this).data(DATA_KEY)\n\n        if (!data) {\n          $(this).data(DATA_KEY, (data = new Dropdown(this)))\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config].call(this)\n        }\n      })\n    }\n\n    static _clearMenus(event) {\n      if (event && event.which === RIGHT_MOUSE_BUTTON_WHICH) {\n        return\n      }\n\n      let backdrop = $(Selector.BACKDROP)[0]\n      if (backdrop) {\n        backdrop.parentNode.removeChild(backdrop)\n      }\n\n      let toggles = $.makeArray($(Selector.DATA_TOGGLE))\n\n      for (let i = 0; i < toggles.length; i++) {\n        let parent        = Dropdown._getParentFromElement(toggles[i])\n        let relatedTarget = { relatedTarget : toggles[i] }\n\n        if (!$(parent).hasClass(ClassName.OPEN)) {\n          continue\n        }\n\n        if (event && event.type === 'click' &&\n           (/input|textarea/i.test(event.target.tagName)) &&\n           ($.contains(parent, event.target))) {\n          continue\n        }\n\n        let hideEvent = $.Event(Event.HIDE, relatedTarget)\n        $(parent).trigger(hideEvent)\n        if (hideEvent.isDefaultPrevented()) {\n          continue\n        }\n\n        toggles[i].setAttribute('aria-expanded', 'false')\n\n        $(parent)\n          .removeClass(ClassName.OPEN)\n          .trigger($.Event(Event.HIDDEN, relatedTarget))\n      }\n    }\n\n    static _getParentFromElement(element) {\n      let parent\n      let selector = Util.getSelectorFromElement(element)\n\n      if (selector) {\n        parent = $(selector)[0]\n      }\n\n      return parent || element.parentNode\n    }\n\n    static _dataApiKeydownHandler(event) {\n      if (!/(38|40|27|32)/.test(event.which) ||\n         /input|textarea/i.test(event.target.tagName)) {\n        return\n      }\n\n      event.preventDefault()\n      event.stopPropagation()\n\n      if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {\n        return\n      }\n\n      let parent   = Dropdown._getParentFromElement(this)\n      let isActive = $(parent).hasClass(ClassName.OPEN)\n\n      if ((!isActive && event.which !== ESCAPE_KEYCODE) ||\n           (isActive && event.which === ESCAPE_KEYCODE)) {\n\n        if (event.which === ESCAPE_KEYCODE) {\n          let toggle = $(parent).find(Selector.DATA_TOGGLE)[0]\n          $(toggle).trigger('focus')\n        }\n\n        $(this).trigger('click')\n        return\n      }\n\n      let items = $.makeArray($(Selector.VISIBLE_ITEMS))\n\n      items = items.filter((item) => {\n        return item.offsetWidth || item.offsetHeight\n      })\n\n      if (!items.length) {\n        return\n      }\n\n      let index = items.indexOf(event.target)\n\n      if (event.which === ARROW_UP_KEYCODE && index > 0) { // up\n        index--\n      }\n\n      if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) { // down\n        index++\n      }\n\n      if (index < 0) {\n        index = 0\n      }\n\n      items[index].focus()\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document)\n    .on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE,  Dropdown._dataApiKeydownHandler)\n    .on(Event.KEYDOWN_DATA_API, Selector.ROLE_MENU,    Dropdown._dataApiKeydownHandler)\n    .on(Event.KEYDOWN_DATA_API, Selector.ROLE_LISTBOX, Dropdown._dataApiKeydownHandler)\n    .on(Event.CLICK_DATA_API, Dropdown._clearMenus)\n    .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, Dropdown.prototype.toggle)\n    .on(Event.CLICK_DATA_API, Selector.FORM_CHILD, (e) => {\n      e.stopPropagation()\n    })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Dropdown._jQueryInterface\n  $.fn[NAME].Constructor = Dropdown\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Dropdown._jQueryInterface\n  }\n\n  return Dropdown\n\n})(jQuery)\n\nexport default Dropdown\n"]}
\ No newline at end of file
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): dropdown.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Dropdown = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                     = 'dropdown'\n  const VERSION                  = '4.0.0-alpha.5'\n  const DATA_KEY                 = 'bs.dropdown'\n  const EVENT_KEY                = `.${DATA_KEY}`\n  const DATA_API_KEY             = '.data-api'\n  const JQUERY_NO_CONFLICT       = $.fn[NAME]\n  const ESCAPE_KEYCODE           = 27 // KeyboardEvent.which value for Escape (Esc) key\n  const ARROW_UP_KEYCODE         = 38 // KeyboardEvent.which value for up arrow key\n  const ARROW_DOWN_KEYCODE       = 40 // KeyboardEvent.which value for down arrow key\n  const RIGHT_MOUSE_BUTTON_WHICH = 3 // MouseEvent.which value for the right button (assuming a right-handed mouse)\n\n  const Event = {\n    HIDE             : `hide${EVENT_KEY}`,\n    HIDDEN           : `hidden${EVENT_KEY}`,\n    SHOW             : `show${EVENT_KEY}`,\n    SHOWN            : `shown${EVENT_KEY}`,\n    CLICK            : `click${EVENT_KEY}`,\n    CLICK_DATA_API   : `click${EVENT_KEY}${DATA_API_KEY}`,\n    KEYDOWN_DATA_API : `keydown${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    BACKDROP : 'dropdown-backdrop',\n    DISABLED : 'disabled',\n    SHOW     : 'show'\n  }\n\n  const Selector = {\n    BACKDROP      : '.dropdown-backdrop',\n    DATA_TOGGLE   : '[data-toggle=\"dropdown\"]',\n    FORM_CHILD    : '.dropdown form',\n    ROLE_MENU     : '[role=\"menu\"]',\n    ROLE_LISTBOX  : '[role=\"listbox\"]',\n    NAVBAR_NAV    : '.navbar-nav',\n    VISIBLE_ITEMS : '[role=\"menu\"] li:not(.disabled) a, '\n                  + '[role=\"listbox\"] li:not(.disabled) a'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Dropdown {\n\n    constructor(element) {\n      this._element = element\n\n      this._addEventListeners()\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    toggle() {\n      if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {\n        return false\n      }\n\n      const parent   = Dropdown._getParentFromElement(this)\n      const isActive = $(parent).hasClass(ClassName.SHOW)\n\n      Dropdown._clearMenus()\n\n      if (isActive) {\n        return false\n      }\n\n      if ('ontouchstart' in document.documentElement &&\n         !$(parent).closest(Selector.NAVBAR_NAV).length) {\n\n        // if mobile we use a backdrop because click events don't delegate\n        const dropdown     = document.createElement('div')\n        dropdown.className = ClassName.BACKDROP\n        $(dropdown).insertBefore(this)\n        $(dropdown).on('click', Dropdown._clearMenus)\n      }\n\n      const relatedTarget = {\n        relatedTarget : this\n      }\n      const showEvent     = $.Event(Event.SHOW, relatedTarget)\n\n      $(parent).trigger(showEvent)\n\n      if (showEvent.isDefaultPrevented()) {\n        return false\n      }\n\n      this.focus()\n      this.setAttribute('aria-expanded', true)\n\n      $(parent).toggleClass(ClassName.SHOW)\n      $(parent).trigger($.Event(Event.SHOWN, relatedTarget))\n\n      return false\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      $(this._element).off(EVENT_KEY)\n      this._element = null\n    }\n\n\n    // private\n\n    _addEventListeners() {\n      $(this._element).on(Event.CLICK, this.toggle)\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data = $(this).data(DATA_KEY)\n\n        if (!data) {\n          data = new Dropdown(this)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config].call(this)\n        }\n      })\n    }\n\n    static _clearMenus(event) {\n      if (event && event.which === RIGHT_MOUSE_BUTTON_WHICH) {\n        return\n      }\n\n      const backdrop = $(Selector.BACKDROP)[0]\n      if (backdrop) {\n        backdrop.parentNode.removeChild(backdrop)\n      }\n\n      const toggles = $.makeArray($(Selector.DATA_TOGGLE))\n\n      for (let i = 0; i < toggles.length; i++) {\n        const parent        = Dropdown._getParentFromElement(toggles[i])\n        const relatedTarget = {\n          relatedTarget : toggles[i]\n        }\n\n        if (!$(parent).hasClass(ClassName.SHOW)) {\n          continue\n        }\n\n        if (event && event.type === 'click' &&\n           /input|textarea/i.test(event.target.tagName) &&\n           $.contains(parent, event.target)) {\n          continue\n        }\n\n        const hideEvent = $.Event(Event.HIDE, relatedTarget)\n        $(parent).trigger(hideEvent)\n        if (hideEvent.isDefaultPrevented()) {\n          continue\n        }\n\n        toggles[i].setAttribute('aria-expanded', 'false')\n\n        $(parent)\n          .removeClass(ClassName.SHOW)\n          .trigger($.Event(Event.HIDDEN, relatedTarget))\n      }\n    }\n\n    static _getParentFromElement(element) {\n      let parent\n      const selector = Util.getSelectorFromElement(element)\n\n      if (selector) {\n        parent = $(selector)[0]\n      }\n\n      return parent || element.parentNode\n    }\n\n    static _dataApiKeydownHandler(event) {\n      if (!/(38|40|27|32)/.test(event.which) ||\n         /input|textarea/i.test(event.target.tagName)) {\n        return\n      }\n\n      event.preventDefault()\n      event.stopPropagation()\n\n      if (this.disabled || $(this).hasClass(ClassName.DISABLED)) {\n        return\n      }\n\n      const parent   = Dropdown._getParentFromElement(this)\n      const isActive = $(parent).hasClass(ClassName.SHOW)\n\n      if (!isActive && event.which !== ESCAPE_KEYCODE ||\n           isActive && event.which === ESCAPE_KEYCODE) {\n\n        if (event.which === ESCAPE_KEYCODE) {\n          const toggle = $(parent).find(Selector.DATA_TOGGLE)[0]\n          $(toggle).trigger('focus')\n        }\n\n        $(this).trigger('click')\n        return\n      }\n\n      const items = $(parent).find(Selector.VISIBLE_ITEMS).get()\n\n      if (!items.length) {\n        return\n      }\n\n      let index = items.indexOf(event.target)\n\n      if (event.which === ARROW_UP_KEYCODE && index > 0) { // up\n        index--\n      }\n\n      if (event.which === ARROW_DOWN_KEYCODE && index < items.length - 1) { // down\n        index++\n      }\n\n      if (index < 0) {\n        index = 0\n      }\n\n      items[index].focus()\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document)\n    .on(Event.KEYDOWN_DATA_API, Selector.DATA_TOGGLE,  Dropdown._dataApiKeydownHandler)\n    .on(Event.KEYDOWN_DATA_API, Selector.ROLE_MENU,    Dropdown._dataApiKeydownHandler)\n    .on(Event.KEYDOWN_DATA_API, Selector.ROLE_LISTBOX, Dropdown._dataApiKeydownHandler)\n    .on(Event.CLICK_DATA_API, Dropdown._clearMenus)\n    .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, Dropdown.prototype.toggle)\n    .on(Event.CLICK_DATA_API, Selector.FORM_CHILD, (e) => {\n      e.stopPropagation()\n    })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Dropdown._jQueryInterface\n  $.fn[NAME].Constructor = Dropdown\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Dropdown._jQueryInterface\n  }\n\n  return Dropdown\n\n})(jQuery)\n\nexport default Dropdown\n"]}
\ No newline at end of file
diff --git a/js/dist/modal.js b/js/dist/modal.js
index 790ce2034..8a778c48b 100644
--- a/js/dist/modal.js
+++ b/js/dist/modal.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): modal.js
+ * Bootstrap (v4.0.0-alpha.5): modal.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var Modal = function ($) {
    */
 
   var NAME = 'modal';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.modal';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -62,7 +62,7 @@ var Modal = function ($) {
     BACKDROP: 'modal-backdrop',
     OPEN: 'modal-open',
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
@@ -89,6 +89,7 @@ var Modal = function ($) {
       this._isShown = false;
       this._isBodyOverflowing = false;
       this._ignoreBackdropClick = false;
+      this._isTransitioning = false;
       this._originalBodyPadding = 0;
       this._scrollbarWidth = 0;
     }
@@ -104,6 +105,13 @@ var Modal = function ($) {
     Modal.prototype.show = function show(relatedTarget) {
       var _this = this;
 
+      if (this._isTransitioning) {
+        throw new Error('Modal is transitioning');
+      }
+
+      if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
+        this._isTransitioning = true;
+      }
       var showEvent = $.Event(Event.SHOW, {
         relatedTarget: relatedTarget
       });
@@ -124,7 +132,9 @@ var Modal = function ($) {
       this._setEscapeEvent();
       this._setResizeEvent();
 
-      $(this._element).on(Event.CLICK_DISMISS, Selector.DATA_DISMISS, $.proxy(this.hide, this));
+      $(this._element).on(Event.CLICK_DISMISS, Selector.DATA_DISMISS, function (event) {
+        return _this.hide(event);
+      });
 
       $(this._dialog).on(Event.MOUSEDOWN_DISMISS, function () {
         $(_this._element).one(Event.MOUSEUP_DISMISS, function (event) {
@@ -134,16 +144,28 @@ var Modal = function ($) {
         });
       });
 
-      this._showBackdrop($.proxy(this._showElement, this, relatedTarget));
+      this._showBackdrop(function () {
+        return _this._showElement(relatedTarget);
+      });
     };
 
     Modal.prototype.hide = function hide(event) {
+      var _this2 = this;
+
       if (event) {
         event.preventDefault();
       }
 
-      var hideEvent = $.Event(Event.HIDE);
+      if (this._isTransitioning) {
+        throw new Error('Modal is transitioning');
+      }
+
+      var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);
+      if (transition) {
+        this._isTransitioning = true;
+      }
 
+      var hideEvent = $.Event(Event.HIDE);
       $(this._element).trigger(hideEvent);
 
       if (!this._isShown || hideEvent.isDefaultPrevented()) {
@@ -157,14 +179,15 @@ var Modal = function ($) {
 
       $(document).off(Event.FOCUSIN);
 
-      $(this._element).removeClass(ClassName.IN);
+      $(this._element).removeClass(ClassName.SHOW);
 
       $(this._element).off(Event.CLICK_DISMISS);
       $(this._dialog).off(Event.MOUSEDOWN_DISMISS);
 
-      if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
-
-        $(this._element).one(Util.TRANSITION_END, $.proxy(this._hideModal, this)).emulateTransitionEnd(TRANSITION_DURATION);
+      if (transition) {
+        $(this._element).one(Util.TRANSITION_END, function (event) {
+          return _this2._hideModal(event);
+        }).emulateTransitionEnd(TRANSITION_DURATION);
       } else {
         this._hideModal();
       }
@@ -173,10 +196,7 @@ var Modal = function ($) {
     Modal.prototype.dispose = function dispose() {
       $.removeData(this._element, DATA_KEY);
 
-      $(window).off(EVENT_KEY);
-      $(document).off(EVENT_KEY);
-      $(this._element).off(EVENT_KEY);
-      $(this._backdrop).off(EVENT_KEY);
+      $(window, document, this._element, this._backdrop).off(EVENT_KEY);
 
       this._config = null;
       this._element = null;
@@ -198,7 +218,7 @@ var Modal = function ($) {
     };
 
     Modal.prototype._showElement = function _showElement(relatedTarget) {
-      var _this2 = this;
+      var _this3 = this;
 
       var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);
 
@@ -215,7 +235,7 @@ var Modal = function ($) {
         Util.reflow(this._element);
       }
 
-      $(this._element).addClass(ClassName.IN);
+      $(this._element).addClass(ClassName.SHOW);
 
       if (this._config.focus) {
         this._enforceFocus();
@@ -226,10 +246,11 @@ var Modal = function ($) {
       });
 
       var transitionComplete = function transitionComplete() {
-        if (_this2._config.focus) {
-          _this2._element.focus();
+        if (_this3._config.focus) {
+          _this3._element.focus();
         }
-        $(_this2._element).trigger(shownEvent);
+        _this3._isTransitioning = false;
+        $(_this3._element).trigger(shownEvent);
       };
 
       if (transition) {
@@ -240,23 +261,23 @@ var Modal = function ($) {
     };
 
     Modal.prototype._enforceFocus = function _enforceFocus() {
-      var _this3 = this;
+      var _this4 = this;
 
       $(document).off(Event.FOCUSIN) // guard against infinite focus loop
       .on(Event.FOCUSIN, function (event) {
-        if (document !== event.target && _this3._element !== event.target && !$(_this3._element).has(event.target).length) {
-          _this3._element.focus();
+        if (document !== event.target && _this4._element !== event.target && !$(_this4._element).has(event.target).length) {
+          _this4._element.focus();
         }
       });
     };
 
     Modal.prototype._setEscapeEvent = function _setEscapeEvent() {
-      var _this4 = this;
+      var _this5 = this;
 
       if (this._isShown && this._config.keyboard) {
         $(this._element).on(Event.KEYDOWN_DISMISS, function (event) {
           if (event.which === ESCAPE_KEYCODE) {
-            _this4.hide();
+            _this5.hide();
           }
         });
       } else if (!this._isShown) {
@@ -265,23 +286,28 @@ var Modal = function ($) {
     };
 
     Modal.prototype._setResizeEvent = function _setResizeEvent() {
+      var _this6 = this;
+
       if (this._isShown) {
-        $(window).on(Event.RESIZE, $.proxy(this._handleUpdate, this));
+        $(window).on(Event.RESIZE, function (event) {
+          return _this6._handleUpdate(event);
+        });
       } else {
         $(window).off(Event.RESIZE);
       }
     };
 
     Modal.prototype._hideModal = function _hideModal() {
-      var _this5 = this;
+      var _this7 = this;
 
       this._element.style.display = 'none';
       this._element.setAttribute('aria-hidden', 'true');
+      this._isTransitioning = false;
       this._showBackdrop(function () {
         $(document.body).removeClass(ClassName.OPEN);
-        _this5._resetAdjustments();
-        _this5._resetScrollbar();
-        $(_this5._element).trigger(Event.HIDDEN);
+        _this7._resetAdjustments();
+        _this7._resetScrollbar();
+        $(_this7._element).trigger(Event.HIDDEN);
       });
     };
 
@@ -293,7 +319,7 @@ var Modal = function ($) {
     };
 
     Modal.prototype._showBackdrop = function _showBackdrop(callback) {
-      var _this6 = this;
+      var _this8 = this;
 
       var animate = $(this._element).hasClass(ClassName.FADE) ? ClassName.FADE : '';
 
@@ -310,17 +336,17 @@ var Modal = function ($) {
         $(this._backdrop).appendTo(document.body);
 
         $(this._element).on(Event.CLICK_DISMISS, function (event) {
-          if (_this6._ignoreBackdropClick) {
-            _this6._ignoreBackdropClick = false;
+          if (_this8._ignoreBackdropClick) {
+            _this8._ignoreBackdropClick = false;
             return;
           }
           if (event.target !== event.currentTarget) {
             return;
           }
-          if (_this6._config.backdrop === 'static') {
-            _this6._element.focus();
+          if (_this8._config.backdrop === 'static') {
+            _this8._element.focus();
           } else {
-            _this6.hide();
+            _this8.hide();
           }
         });
 
@@ -328,7 +354,7 @@ var Modal = function ($) {
           Util.reflow(this._backdrop);
         }
 
-        $(this._backdrop).addClass(ClassName.IN);
+        $(this._backdrop).addClass(ClassName.SHOW);
 
         if (!callback) {
           return;
@@ -341,10 +367,10 @@ var Modal = function ($) {
 
         $(this._backdrop).one(Util.TRANSITION_END, callback).emulateTransitionEnd(BACKDROP_TRANSITION_DURATION);
       } else if (!this._isShown && this._backdrop) {
-        $(this._backdrop).removeClass(ClassName.IN);
+        $(this._backdrop).removeClass(ClassName.SHOW);
 
         var callbackRemove = function callbackRemove() {
-          _this6._removeBackdrop();
+          _this8._removeBackdrop();
           if (callback) {
             callback();
           }
@@ -460,7 +486,7 @@ var Modal = function ($) {
    */
 
   $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    var _this7 = this;
+    var _this9 = this;
 
     var target = void 0;
     var selector = Util.getSelectorFromElement(this);
@@ -471,7 +497,7 @@ var Modal = function ($) {
 
     var config = $(target).data(DATA_KEY) ? 'toggle' : $.extend({}, $(target).data(), $(this).data());
 
-    if (this.tagName === 'A') {
+    if (this.tagName === 'A' || this.tagName === 'AREA') {
       event.preventDefault();
     }
 
@@ -482,8 +508,8 @@ var Modal = function ($) {
       }
 
       $target.one(Event.HIDDEN, function () {
-        if ($(_this7).is(':visible')) {
-          _this7.focus();
+        if ($(_this9).is(':visible')) {
+          _this9.focus();
         }
       });
     });
diff --git a/js/dist/modal.js.map b/js/dist/modal.js.map
index e37defbaa..d70a866c1 100644
--- a/js/dist/modal.js.map
+++ b/js/dist/modal.js.map
@@ -1 +1 @@
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): modal.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Modal = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                         = 'modal'\n  const VERSION                      = '4.0.0-alpha.4'\n  const DATA_KEY                     = 'bs.modal'\n  const EVENT_KEY                    = `.${DATA_KEY}`\n  const DATA_API_KEY                 = '.data-api'\n  const JQUERY_NO_CONFLICT           = $.fn[NAME]\n  const TRANSITION_DURATION          = 300\n  const BACKDROP_TRANSITION_DURATION = 150\n  const ESCAPE_KEYCODE               = 27 // KeyboardEvent.which value for Escape (Esc) key\n\n  const Default = {\n    backdrop : true,\n    keyboard : true,\n    focus    : true,\n    show     : true\n  }\n\n  const DefaultType = {\n    backdrop : '(boolean|string)',\n    keyboard : 'boolean',\n    focus    : 'boolean',\n    show     : 'boolean'\n  }\n\n  const Event = {\n    HIDE              : `hide${EVENT_KEY}`,\n    HIDDEN            : `hidden${EVENT_KEY}`,\n    SHOW              : `show${EVENT_KEY}`,\n    SHOWN             : `shown${EVENT_KEY}`,\n    FOCUSIN           : `focusin${EVENT_KEY}`,\n    RESIZE            : `resize${EVENT_KEY}`,\n    CLICK_DISMISS     : `click.dismiss${EVENT_KEY}`,\n    KEYDOWN_DISMISS   : `keydown.dismiss${EVENT_KEY}`,\n    MOUSEUP_DISMISS   : `mouseup.dismiss${EVENT_KEY}`,\n    MOUSEDOWN_DISMISS : `mousedown.dismiss${EVENT_KEY}`,\n    CLICK_DATA_API    : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    SCROLLBAR_MEASURER : 'modal-scrollbar-measure',\n    BACKDROP           : 'modal-backdrop',\n    OPEN               : 'modal-open',\n    FADE               : 'fade',\n    IN                 : 'in'\n  }\n\n  const Selector = {\n    DIALOG             : '.modal-dialog',\n    DATA_TOGGLE        : '[data-toggle=\"modal\"]',\n    DATA_DISMISS       : '[data-dismiss=\"modal\"]',\n    FIXED_CONTENT      : '.navbar-fixed-top, .navbar-fixed-bottom, .is-fixed'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Modal {\n\n    constructor(element, config) {\n      this._config              = this._getConfig(config)\n      this._element             = element\n      this._dialog              = $(element).find(Selector.DIALOG)[0]\n      this._backdrop            = null\n      this._isShown             = false\n      this._isBodyOverflowing   = false\n      this._ignoreBackdropClick = false\n      this._originalBodyPadding = 0\n      this._scrollbarWidth      = 0\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    toggle(relatedTarget) {\n      return this._isShown ? this.hide() : this.show(relatedTarget)\n    }\n\n    show(relatedTarget) {\n      let showEvent = $.Event(Event.SHOW, {\n        relatedTarget\n      })\n\n      $(this._element).trigger(showEvent)\n\n      if (this._isShown || showEvent.isDefaultPrevented()) {\n        return\n      }\n\n      this._isShown = true\n\n      this._checkScrollbar()\n      this._setScrollbar()\n\n      $(document.body).addClass(ClassName.OPEN)\n\n      this._setEscapeEvent()\n      this._setResizeEvent()\n\n      $(this._element).on(\n        Event.CLICK_DISMISS,\n        Selector.DATA_DISMISS,\n        $.proxy(this.hide, this)\n      )\n\n      $(this._dialog).on(Event.MOUSEDOWN_DISMISS, () => {\n        $(this._element).one(Event.MOUSEUP_DISMISS, (event) => {\n          if ($(event.target).is(this._element)) {\n            this._ignoreBackdropClick = true\n          }\n        })\n      })\n\n      this._showBackdrop(\n        $.proxy(this._showElement, this, relatedTarget)\n      )\n    }\n\n    hide(event) {\n      if (event) {\n        event.preventDefault()\n      }\n\n      let hideEvent = $.Event(Event.HIDE)\n\n      $(this._element).trigger(hideEvent)\n\n      if (!this._isShown || hideEvent.isDefaultPrevented()) {\n        return\n      }\n\n      this._isShown = false\n\n      this._setEscapeEvent()\n      this._setResizeEvent()\n\n      $(document).off(Event.FOCUSIN)\n\n      $(this._element).removeClass(ClassName.IN)\n\n      $(this._element).off(Event.CLICK_DISMISS)\n      $(this._dialog).off(Event.MOUSEDOWN_DISMISS)\n\n      if (Util.supportsTransitionEnd() &&\n         ($(this._element).hasClass(ClassName.FADE))) {\n\n        $(this._element)\n          .one(Util.TRANSITION_END, $.proxy(this._hideModal, this))\n          .emulateTransitionEnd(TRANSITION_DURATION)\n      } else {\n        this._hideModal()\n      }\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n\n      $(window).off(EVENT_KEY)\n      $(document).off(EVENT_KEY)\n      $(this._element).off(EVENT_KEY)\n      $(this._backdrop).off(EVENT_KEY)\n\n      this._config              = null\n      this._element             = null\n      this._dialog              = null\n      this._backdrop            = null\n      this._isShown             = null\n      this._isBodyOverflowing   = null\n      this._ignoreBackdropClick = null\n      this._originalBodyPadding = null\n      this._scrollbarWidth      = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n      Util.typeCheckConfig(NAME, config, DefaultType)\n      return config\n    }\n\n    _showElement(relatedTarget) {\n      let transition = Util.supportsTransitionEnd() &&\n        $(this._element).hasClass(ClassName.FADE)\n\n      if (!this._element.parentNode ||\n         (this._element.parentNode.nodeType !== Node.ELEMENT_NODE)) {\n        // don't move modals dom position\n        document.body.appendChild(this._element)\n      }\n\n      this._element.style.display = 'block'\n      this._element.removeAttribute('aria-hidden')\n      this._element.scrollTop = 0\n\n      if (transition) {\n        Util.reflow(this._element)\n      }\n\n      $(this._element).addClass(ClassName.IN)\n\n      if (this._config.focus) {\n        this._enforceFocus()\n      }\n\n      let shownEvent = $.Event(Event.SHOWN, {\n        relatedTarget\n      })\n\n      let transitionComplete = () => {\n        if (this._config.focus) {\n          this._element.focus()\n        }\n        $(this._element).trigger(shownEvent)\n      }\n\n      if (transition) {\n        $(this._dialog)\n          .one(Util.TRANSITION_END, transitionComplete)\n          .emulateTransitionEnd(TRANSITION_DURATION)\n      } else {\n        transitionComplete()\n      }\n    }\n\n    _enforceFocus() {\n      $(document)\n        .off(Event.FOCUSIN) // guard against infinite focus loop\n        .on(Event.FOCUSIN, (event) => {\n          if (document !== event.target &&\n              this._element !== event.target &&\n              (!$(this._element).has(event.target).length)) {\n            this._element.focus()\n          }\n        })\n    }\n\n    _setEscapeEvent() {\n      if (this._isShown && this._config.keyboard) {\n        $(this._element).on(Event.KEYDOWN_DISMISS, (event) => {\n          if (event.which === ESCAPE_KEYCODE) {\n            this.hide()\n          }\n        })\n\n      } else if (!this._isShown) {\n        $(this._element).off(Event.KEYDOWN_DISMISS)\n      }\n    }\n\n    _setResizeEvent() {\n      if (this._isShown) {\n        $(window).on(Event.RESIZE, $.proxy(this._handleUpdate, this))\n      } else {\n        $(window).off(Event.RESIZE)\n      }\n    }\n\n    _hideModal() {\n      this._element.style.display = 'none'\n      this._element.setAttribute('aria-hidden', 'true')\n      this._showBackdrop(() => {\n        $(document.body).removeClass(ClassName.OPEN)\n        this._resetAdjustments()\n        this._resetScrollbar()\n        $(this._element).trigger(Event.HIDDEN)\n      })\n    }\n\n    _removeBackdrop() {\n      if (this._backdrop) {\n        $(this._backdrop).remove()\n        this._backdrop = null\n      }\n    }\n\n    _showBackdrop(callback) {\n      let animate = $(this._element).hasClass(ClassName.FADE) ?\n        ClassName.FADE : ''\n\n      if (this._isShown && this._config.backdrop) {\n        let doAnimate = Util.supportsTransitionEnd() && animate\n\n        this._backdrop = document.createElement('div')\n        this._backdrop.className = ClassName.BACKDROP\n\n        if (animate) {\n          $(this._backdrop).addClass(animate)\n        }\n\n        $(this._backdrop).appendTo(document.body)\n\n        $(this._element).on(Event.CLICK_DISMISS, (event) => {\n          if (this._ignoreBackdropClick) {\n            this._ignoreBackdropClick = false\n            return\n          }\n          if (event.target !== event.currentTarget) {\n            return\n          }\n          if (this._config.backdrop === 'static') {\n            this._element.focus()\n          } else {\n            this.hide()\n          }\n        })\n\n        if (doAnimate) {\n          Util.reflow(this._backdrop)\n        }\n\n        $(this._backdrop).addClass(ClassName.IN)\n\n        if (!callback) {\n          return\n        }\n\n        if (!doAnimate) {\n          callback()\n          return\n        }\n\n        $(this._backdrop)\n          .one(Util.TRANSITION_END, callback)\n          .emulateTransitionEnd(BACKDROP_TRANSITION_DURATION)\n\n      } else if (!this._isShown && this._backdrop) {\n        $(this._backdrop).removeClass(ClassName.IN)\n\n        let callbackRemove = () => {\n          this._removeBackdrop()\n          if (callback) {\n            callback()\n          }\n        }\n\n        if (Util.supportsTransitionEnd() &&\n           ($(this._element).hasClass(ClassName.FADE))) {\n          $(this._backdrop)\n            .one(Util.TRANSITION_END, callbackRemove)\n            .emulateTransitionEnd(BACKDROP_TRANSITION_DURATION)\n        } else {\n          callbackRemove()\n        }\n\n      } else if (callback) {\n        callback()\n      }\n    }\n\n\n    // ----------------------------------------------------------------------\n    // the following methods are used to handle overflowing modals\n    // todo (fat): these should probably be refactored out of modal.js\n    // ----------------------------------------------------------------------\n\n    _handleUpdate() {\n      this._adjustDialog()\n    }\n\n    _adjustDialog() {\n      let isModalOverflowing =\n        this._element.scrollHeight > document.documentElement.clientHeight\n\n      if (!this._isBodyOverflowing && isModalOverflowing) {\n        this._element.style.paddingLeft = `${this._scrollbarWidth}px`\n      }\n\n      if (this._isBodyOverflowing && !isModalOverflowing) {\n        this._element.style.paddingRight = `${this._scrollbarWidth}px`\n      }\n    }\n\n    _resetAdjustments() {\n      this._element.style.paddingLeft = ''\n      this._element.style.paddingRight = ''\n    }\n\n    _checkScrollbar() {\n      this._isBodyOverflowing = document.body.clientWidth < window.innerWidth\n      this._scrollbarWidth = this._getScrollbarWidth()\n    }\n\n    _setScrollbar() {\n      let bodyPadding = parseInt(\n        $(Selector.FIXED_CONTENT).css('padding-right') || 0,\n        10\n      )\n\n      this._originalBodyPadding = document.body.style.paddingRight || ''\n\n      if (this._isBodyOverflowing) {\n        document.body.style.paddingRight =\n          `${bodyPadding + this._scrollbarWidth}px`\n      }\n    }\n\n    _resetScrollbar() {\n      document.body.style.paddingRight = this._originalBodyPadding\n    }\n\n    _getScrollbarWidth() { // thx d.walsh\n      let scrollDiv = document.createElement('div')\n      scrollDiv.className = ClassName.SCROLLBAR_MEASURER\n      document.body.appendChild(scrollDiv)\n      let scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth\n      document.body.removeChild(scrollDiv)\n      return scrollbarWidth\n    }\n\n\n    // static\n\n    static _jQueryInterface(config, relatedTarget) {\n      return this.each(function () {\n        let data    = $(this).data(DATA_KEY)\n        let _config = $.extend(\n          {},\n          Modal.Default,\n          $(this).data(),\n          typeof config === 'object' && config\n        )\n\n        if (!data) {\n          data = new Modal(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config](relatedTarget)\n        } else if (_config.show) {\n          data.show(relatedTarget)\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n    let target\n    let selector = Util.getSelectorFromElement(this)\n\n    if (selector) {\n      target = $(selector)[0]\n    }\n\n    let config = $(target).data(DATA_KEY) ?\n      'toggle' : $.extend({}, $(target).data(), $(this).data())\n\n    if (this.tagName === 'A') {\n      event.preventDefault()\n    }\n\n    let $target = $(target).one(Event.SHOW, (showEvent) => {\n      if (showEvent.isDefaultPrevented()) {\n        // only register focus restorer if modal will actually get shown\n        return\n      }\n\n      $target.one(Event.HIDDEN, () => {\n        if ($(this).is(':visible')) {\n          this.focus()\n        }\n      })\n    })\n\n    Modal._jQueryInterface.call($(target), config, this)\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Modal._jQueryInterface\n  $.fn[NAME].Constructor = Modal\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Modal._jQueryInterface\n  }\n\n  return Modal\n\n})(jQuery)\n\nexport default Modal\n"]}
\ No newline at end of file
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): modal.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Modal = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                         = 'modal'\n  const VERSION                      = '4.0.0-alpha.5'\n  const DATA_KEY                     = 'bs.modal'\n  const EVENT_KEY                    = `.${DATA_KEY}`\n  const DATA_API_KEY                 = '.data-api'\n  const JQUERY_NO_CONFLICT           = $.fn[NAME]\n  const TRANSITION_DURATION          = 300\n  const BACKDROP_TRANSITION_DURATION = 150\n  const ESCAPE_KEYCODE               = 27 // KeyboardEvent.which value for Escape (Esc) key\n\n  const Default = {\n    backdrop : true,\n    keyboard : true,\n    focus    : true,\n    show     : true\n  }\n\n  const DefaultType = {\n    backdrop : '(boolean|string)',\n    keyboard : 'boolean',\n    focus    : 'boolean',\n    show     : 'boolean'\n  }\n\n  const Event = {\n    HIDE              : `hide${EVENT_KEY}`,\n    HIDDEN            : `hidden${EVENT_KEY}`,\n    SHOW              : `show${EVENT_KEY}`,\n    SHOWN             : `shown${EVENT_KEY}`,\n    FOCUSIN           : `focusin${EVENT_KEY}`,\n    RESIZE            : `resize${EVENT_KEY}`,\n    CLICK_DISMISS     : `click.dismiss${EVENT_KEY}`,\n    KEYDOWN_DISMISS   : `keydown.dismiss${EVENT_KEY}`,\n    MOUSEUP_DISMISS   : `mouseup.dismiss${EVENT_KEY}`,\n    MOUSEDOWN_DISMISS : `mousedown.dismiss${EVENT_KEY}`,\n    CLICK_DATA_API    : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    SCROLLBAR_MEASURER : 'modal-scrollbar-measure',\n    BACKDROP           : 'modal-backdrop',\n    OPEN               : 'modal-open',\n    FADE               : 'fade',\n    SHOW               : 'show'\n  }\n\n  const Selector = {\n    DIALOG             : '.modal-dialog',\n    DATA_TOGGLE        : '[data-toggle=\"modal\"]',\n    DATA_DISMISS       : '[data-dismiss=\"modal\"]',\n    FIXED_CONTENT      : '.navbar-fixed-top, .navbar-fixed-bottom, .is-fixed'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Modal {\n\n    constructor(element, config) {\n      this._config              = this._getConfig(config)\n      this._element             = element\n      this._dialog              = $(element).find(Selector.DIALOG)[0]\n      this._backdrop            = null\n      this._isShown             = false\n      this._isBodyOverflowing   = false\n      this._ignoreBackdropClick = false\n      this._isTransitioning     = false\n      this._originalBodyPadding = 0\n      this._scrollbarWidth      = 0\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    toggle(relatedTarget) {\n      return this._isShown ? this.hide() : this.show(relatedTarget)\n    }\n\n    show(relatedTarget) {\n      if (this._isTransitioning) {\n        throw new Error('Modal is transitioning')\n      }\n\n      if (Util.supportsTransitionEnd() &&\n        $(this._element).hasClass(ClassName.FADE)) {\n        this._isTransitioning = true\n      }\n      const showEvent = $.Event(Event.SHOW, {\n        relatedTarget\n      })\n\n      $(this._element).trigger(showEvent)\n\n      if (this._isShown || showEvent.isDefaultPrevented()) {\n        return\n      }\n\n      this._isShown = true\n\n      this._checkScrollbar()\n      this._setScrollbar()\n\n      $(document.body).addClass(ClassName.OPEN)\n\n      this._setEscapeEvent()\n      this._setResizeEvent()\n\n      $(this._element).on(\n        Event.CLICK_DISMISS,\n        Selector.DATA_DISMISS,\n        (event) => this.hide(event)\n      )\n\n      $(this._dialog).on(Event.MOUSEDOWN_DISMISS, () => {\n        $(this._element).one(Event.MOUSEUP_DISMISS, (event) => {\n          if ($(event.target).is(this._element)) {\n            this._ignoreBackdropClick = true\n          }\n        })\n      })\n\n      this._showBackdrop(() => this._showElement(relatedTarget))\n    }\n\n    hide(event) {\n      if (event) {\n        event.preventDefault()\n      }\n\n      if (this._isTransitioning) {\n        throw new Error('Modal is transitioning')\n      }\n\n      const transition = Util.supportsTransitionEnd() &&\n        $(this._element).hasClass(ClassName.FADE)\n      if (transition) {\n        this._isTransitioning = true\n      }\n\n      const hideEvent = $.Event(Event.HIDE)\n      $(this._element).trigger(hideEvent)\n\n      if (!this._isShown || hideEvent.isDefaultPrevented()) {\n        return\n      }\n\n      this._isShown = false\n\n      this._setEscapeEvent()\n      this._setResizeEvent()\n\n      $(document).off(Event.FOCUSIN)\n\n      $(this._element).removeClass(ClassName.SHOW)\n\n      $(this._element).off(Event.CLICK_DISMISS)\n      $(this._dialog).off(Event.MOUSEDOWN_DISMISS)\n\n      if (transition) {\n        $(this._element)\n          .one(Util.TRANSITION_END, (event) => this._hideModal(event))\n          .emulateTransitionEnd(TRANSITION_DURATION)\n      } else {\n        this._hideModal()\n      }\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n\n      $(window, document, this._element, this._backdrop).off(EVENT_KEY)\n\n      this._config              = null\n      this._element             = null\n      this._dialog              = null\n      this._backdrop            = null\n      this._isShown             = null\n      this._isBodyOverflowing   = null\n      this._ignoreBackdropClick = null\n      this._originalBodyPadding = null\n      this._scrollbarWidth      = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n      Util.typeCheckConfig(NAME, config, DefaultType)\n      return config\n    }\n\n    _showElement(relatedTarget) {\n      const transition = Util.supportsTransitionEnd() &&\n        $(this._element).hasClass(ClassName.FADE)\n\n      if (!this._element.parentNode ||\n         this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {\n        // don't move modals dom position\n        document.body.appendChild(this._element)\n      }\n\n      this._element.style.display = 'block'\n      this._element.removeAttribute('aria-hidden')\n      this._element.scrollTop = 0\n\n      if (transition) {\n        Util.reflow(this._element)\n      }\n\n      $(this._element).addClass(ClassName.SHOW)\n\n      if (this._config.focus) {\n        this._enforceFocus()\n      }\n\n      const shownEvent = $.Event(Event.SHOWN, {\n        relatedTarget\n      })\n\n      const transitionComplete = () => {\n        if (this._config.focus) {\n          this._element.focus()\n        }\n        this._isTransitioning = false\n        $(this._element).trigger(shownEvent)\n      }\n\n      if (transition) {\n        $(this._dialog)\n          .one(Util.TRANSITION_END, transitionComplete)\n          .emulateTransitionEnd(TRANSITION_DURATION)\n      } else {\n        transitionComplete()\n      }\n    }\n\n    _enforceFocus() {\n      $(document)\n        .off(Event.FOCUSIN) // guard against infinite focus loop\n        .on(Event.FOCUSIN, (event) => {\n          if (document !== event.target &&\n              this._element !== event.target &&\n              !$(this._element).has(event.target).length) {\n            this._element.focus()\n          }\n        })\n    }\n\n    _setEscapeEvent() {\n      if (this._isShown && this._config.keyboard) {\n        $(this._element).on(Event.KEYDOWN_DISMISS, (event) => {\n          if (event.which === ESCAPE_KEYCODE) {\n            this.hide()\n          }\n        })\n\n      } else if (!this._isShown) {\n        $(this._element).off(Event.KEYDOWN_DISMISS)\n      }\n    }\n\n    _setResizeEvent() {\n      if (this._isShown) {\n        $(window).on(Event.RESIZE, (event) => this._handleUpdate(event))\n      } else {\n        $(window).off(Event.RESIZE)\n      }\n    }\n\n    _hideModal() {\n      this._element.style.display = 'none'\n      this._element.setAttribute('aria-hidden', 'true')\n      this._isTransitioning = false\n      this._showBackdrop(() => {\n        $(document.body).removeClass(ClassName.OPEN)\n        this._resetAdjustments()\n        this._resetScrollbar()\n        $(this._element).trigger(Event.HIDDEN)\n      })\n    }\n\n    _removeBackdrop() {\n      if (this._backdrop) {\n        $(this._backdrop).remove()\n        this._backdrop = null\n      }\n    }\n\n    _showBackdrop(callback) {\n      const animate = $(this._element).hasClass(ClassName.FADE) ?\n        ClassName.FADE : ''\n\n      if (this._isShown && this._config.backdrop) {\n        const doAnimate = Util.supportsTransitionEnd() && animate\n\n        this._backdrop = document.createElement('div')\n        this._backdrop.className = ClassName.BACKDROP\n\n        if (animate) {\n          $(this._backdrop).addClass(animate)\n        }\n\n        $(this._backdrop).appendTo(document.body)\n\n        $(this._element).on(Event.CLICK_DISMISS, (event) => {\n          if (this._ignoreBackdropClick) {\n            this._ignoreBackdropClick = false\n            return\n          }\n          if (event.target !== event.currentTarget) {\n            return\n          }\n          if (this._config.backdrop === 'static') {\n            this._element.focus()\n          } else {\n            this.hide()\n          }\n        })\n\n        if (doAnimate) {\n          Util.reflow(this._backdrop)\n        }\n\n        $(this._backdrop).addClass(ClassName.SHOW)\n\n        if (!callback) {\n          return\n        }\n\n        if (!doAnimate) {\n          callback()\n          return\n        }\n\n        $(this._backdrop)\n          .one(Util.TRANSITION_END, callback)\n          .emulateTransitionEnd(BACKDROP_TRANSITION_DURATION)\n\n      } else if (!this._isShown && this._backdrop) {\n        $(this._backdrop).removeClass(ClassName.SHOW)\n\n        const callbackRemove = () => {\n          this._removeBackdrop()\n          if (callback) {\n            callback()\n          }\n        }\n\n        if (Util.supportsTransitionEnd() &&\n           $(this._element).hasClass(ClassName.FADE)) {\n          $(this._backdrop)\n            .one(Util.TRANSITION_END, callbackRemove)\n            .emulateTransitionEnd(BACKDROP_TRANSITION_DURATION)\n        } else {\n          callbackRemove()\n        }\n\n      } else if (callback) {\n        callback()\n      }\n    }\n\n\n    // ----------------------------------------------------------------------\n    // the following methods are used to handle overflowing modals\n    // todo (fat): these should probably be refactored out of modal.js\n    // ----------------------------------------------------------------------\n\n    _handleUpdate() {\n      this._adjustDialog()\n    }\n\n    _adjustDialog() {\n      const isModalOverflowing =\n        this._element.scrollHeight > document.documentElement.clientHeight\n\n      if (!this._isBodyOverflowing && isModalOverflowing) {\n        this._element.style.paddingLeft = `${this._scrollbarWidth}px`\n      }\n\n      if (this._isBodyOverflowing && !isModalOverflowing) {\n        this._element.style.paddingRight = `${this._scrollbarWidth}px`\n      }\n    }\n\n    _resetAdjustments() {\n      this._element.style.paddingLeft = ''\n      this._element.style.paddingRight = ''\n    }\n\n    _checkScrollbar() {\n      this._isBodyOverflowing = document.body.clientWidth < window.innerWidth\n      this._scrollbarWidth = this._getScrollbarWidth()\n    }\n\n    _setScrollbar() {\n      const bodyPadding = parseInt(\n        $(Selector.FIXED_CONTENT).css('padding-right') || 0,\n        10\n      )\n\n      this._originalBodyPadding = document.body.style.paddingRight || ''\n\n      if (this._isBodyOverflowing) {\n        document.body.style.paddingRight =\n          `${bodyPadding + this._scrollbarWidth}px`\n      }\n    }\n\n    _resetScrollbar() {\n      document.body.style.paddingRight = this._originalBodyPadding\n    }\n\n    _getScrollbarWidth() { // thx d.walsh\n      const scrollDiv = document.createElement('div')\n      scrollDiv.className = ClassName.SCROLLBAR_MEASURER\n      document.body.appendChild(scrollDiv)\n      const scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth\n      document.body.removeChild(scrollDiv)\n      return scrollbarWidth\n    }\n\n\n    // static\n\n    static _jQueryInterface(config, relatedTarget) {\n      return this.each(function () {\n        let data      = $(this).data(DATA_KEY)\n        const _config = $.extend(\n          {},\n          Modal.Default,\n          $(this).data(),\n          typeof config === 'object' && config\n        )\n\n        if (!data) {\n          data = new Modal(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config](relatedTarget)\n        } else if (_config.show) {\n          data.show(relatedTarget)\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n    let target\n    const selector = Util.getSelectorFromElement(this)\n\n    if (selector) {\n      target = $(selector)[0]\n    }\n\n    const config = $(target).data(DATA_KEY) ?\n      'toggle' : $.extend({}, $(target).data(), $(this).data())\n\n    if (this.tagName === 'A' || this.tagName === 'AREA') {\n      event.preventDefault()\n    }\n\n    const $target = $(target).one(Event.SHOW, (showEvent) => {\n      if (showEvent.isDefaultPrevented()) {\n        // only register focus restorer if modal will actually get shown\n        return\n      }\n\n      $target.one(Event.HIDDEN, () => {\n        if ($(this).is(':visible')) {\n          this.focus()\n        }\n      })\n    })\n\n    Modal._jQueryInterface.call($(target), config, this)\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Modal._jQueryInterface\n  $.fn[NAME].Constructor = Modal\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Modal._jQueryInterface\n  }\n\n  return Modal\n\n})(jQuery)\n\nexport default Modal\n"]}
\ No newline at end of file
diff --git a/js/dist/popover.js b/js/dist/popover.js
index d53251205..0d960e1e0 100644
--- a/js/dist/popover.js
+++ b/js/dist/popover.js
@@ -10,7 +10,7 @@ function _inherits(subClass, superClass) { if (typeof superClass !== "function"
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): popover.js
+ * Bootstrap (v4.0.0-alpha.5): popover.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -24,7 +24,7 @@ var Popover = function ($) {
    */
 
   var NAME = 'popover';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.popover';
   var EVENT_KEY = '.' + DATA_KEY;
   var JQUERY_NO_CONFLICT = $.fn[NAME];
@@ -42,7 +42,7 @@ var Popover = function ($) {
 
   var ClassName = {
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
@@ -95,7 +95,7 @@ var Popover = function ($) {
       this.setElementContent($tip.find(Selector.TITLE), this.getTitle());
       this.setElementContent($tip.find(Selector.CONTENT), this._getContent());
 
-      $tip.removeClass(ClassName.FADE).removeClass(ClassName.IN);
+      $tip.removeClass(ClassName.FADE + ' ' + ClassName.SHOW);
 
       this.cleanupTether();
     };
diff --git a/js/dist/popover.js.map b/js/dist/popover.js.map
index bdf6ca8d1..d3aea8534 100644
--- a/js/dist/popover.js.map
+++ b/js/dist/popover.js.map
@@ -1 +1 @@
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Tooltip from './tooltip'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): popover.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Popover = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'popover'\n  const VERSION             = '4.0.0-alpha.4'\n  const DATA_KEY            = 'bs.popover'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n\n  const Default = $.extend({}, Tooltip.Default, {\n    placement : 'right',\n    trigger   : 'click',\n    content   : '',\n    template  : '<div class=\"popover\" role=\"tooltip\">'\n              + '<h3 class=\"popover-title\"></h3>'\n              + '<div class=\"popover-content\"></div></div>'\n  })\n\n  const DefaultType = $.extend({}, Tooltip.DefaultType, {\n    content : '(string|element|function)'\n  })\n\n  const ClassName = {\n    FADE : 'fade',\n    IN  : 'in'\n  }\n\n  const Selector = {\n    TITLE   : '.popover-title',\n    CONTENT : '.popover-content'\n  }\n\n  const Event = {\n    HIDE       : `hide${EVENT_KEY}`,\n    HIDDEN     : `hidden${EVENT_KEY}`,\n    SHOW       : `show${EVENT_KEY}`,\n    SHOWN      : `shown${EVENT_KEY}`,\n    INSERTED   : `inserted${EVENT_KEY}`,\n    CLICK      : `click${EVENT_KEY}`,\n    FOCUSIN    : `focusin${EVENT_KEY}`,\n    FOCUSOUT   : `focusout${EVENT_KEY}`,\n    MOUSEENTER : `mouseenter${EVENT_KEY}`,\n    MOUSELEAVE : `mouseleave${EVENT_KEY}`\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Popover extends Tooltip {\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n    static get NAME() {\n      return NAME\n    }\n\n    static get DATA_KEY() {\n      return DATA_KEY\n    }\n\n    static get Event() {\n      return Event\n    }\n\n    static get EVENT_KEY() {\n      return EVENT_KEY\n    }\n\n    static get DefaultType() {\n      return DefaultType\n    }\n\n\n    // overrides\n\n    isWithContent() {\n      return this.getTitle() || this._getContent()\n    }\n\n    getTipElement() {\n      return (this.tip = this.tip || $(this.config.template)[0])\n    }\n\n    setContent() {\n      let $tip = $(this.getTipElement())\n\n      // we use append for html objects to maintain js events\n      this.setElementContent($tip.find(Selector.TITLE), this.getTitle())\n      this.setElementContent($tip.find(Selector.CONTENT), this._getContent())\n\n      $tip\n        .removeClass(ClassName.FADE)\n        .removeClass(ClassName.IN)\n\n      this.cleanupTether()\n    }\n\n    // private\n\n    _getContent() {\n      return this.element.getAttribute('data-content')\n        || (typeof this.config.content === 'function' ?\n              this.config.content.call(this.element) :\n              this.config.content)\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data   = $(this).data(DATA_KEY)\n        let _config = typeof config === 'object' ? config : null\n\n        if (!data && /destroy|hide/.test(config)) {\n          return\n        }\n\n        if (!data) {\n          data = new Popover(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Popover._jQueryInterface\n  $.fn[NAME].Constructor = Popover\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Popover._jQueryInterface\n  }\n\n  return Popover\n\n})(jQuery)\n\nexport default Popover\n"]}
\ No newline at end of file
+{"version":3,"sources":["../src/popover.js"],"names":["Popover","$","NAME","VERSION","DATA_KEY","EVENT_KEY","JQUERY_NO_CONFLICT","fn","Default","extend","Tooltip","placement","trigger","content","template","DefaultType","ClassName","FADE","SHOW","Selector","TITLE","CONTENT","Event","HIDE","HIDDEN","SHOWN","INSERTED","CLICK","FOCUSIN","FOCUSOUT","MOUSEENTER","MOUSELEAVE","isWithContent","getTitle","_getContent","getTipElement","tip","config","setContent","$tip","setElementContent","find","removeClass","cleanupTether","element","getAttribute","call","_jQueryInterface","each","data","_config","test","undefined","Error","Constructor","noConflict","jQuery"],"mappings":";;;;;;;;;;AAGA;;;;;;;AAOA,IAAMA,UAAW,UAACC,CAAD,EAAO;;AAGtB;;;;;;AAMA,MAAMC,OAAsB,SAA5B;AACA,MAAMC,UAAsB,eAA5B;AACA,MAAMC,WAAsB,YAA5B;AACA,MAAMC,kBAA0BD,QAAhC;AACA,MAAME,qBAAsBL,EAAEM,EAAF,CAAKL,IAAL,CAA5B;;AAEA,MAAMM,UAAUP,EAAEQ,MAAF,CAAS,EAAT,EAAaC,QAAQF,OAArB,EAA8B;AAC5CG,eAAY,OADgC;AAE5CC,aAAY,OAFgC;AAG5CC,aAAY,EAHgC;AAI5CC,cAAY,yCACA,iCADA,GAEA;AANgC,GAA9B,CAAhB;;AASA,MAAMC,cAAcd,EAAEQ,MAAF,CAAS,EAAT,EAAaC,QAAQK,WAArB,EAAkC;AACpDF,aAAU;AAD0C,GAAlC,CAApB;;AAIA,MAAMG,YAAY;AAChBC,UAAO,MADS;AAEhBC,UAAO;AAFS,GAAlB;;AAKA,MAAMC,WAAW;AACfC,WAAU,gBADK;AAEfC,aAAU;AAFK,GAAjB;;AAKA,MAAMC,QAAQ;AACZC,mBAAoBlB,SADR;AAEZmB,uBAAsBnB,SAFV;AAGZa,mBAAoBb,SAHR;AAIZoB,qBAAqBpB,SAJT;AAKZqB,2BAAwBrB,SALZ;AAMZsB,qBAAqBtB,SANT;AAOZuB,yBAAuBvB,SAPX;AAQZwB,2BAAwBxB,SARZ;AASZyB,+BAA0BzB,SATd;AAUZ0B,+BAA0B1B;AAVd,GAAd;;AAcA;;;;;;AApDsB,MA0DhBL,OA1DgB;AAAA;;AAAA;AAAA;;AAAA;AAAA;;AA4FpB;;AA5FoB,sBA8FpBgC,aA9FoB,4BA8FJ;AACd,aAAO,KAAKC,QAAL,MAAmB,KAAKC,WAAL,EAA1B;AACD,KAhGmB;;AAAA,sBAkGpBC,aAlGoB,4BAkGJ;AACd,aAAO,KAAKC,GAAL,GAAW,KAAKA,GAAL,IAAYnC,EAAE,KAAKoC,MAAL,CAAYvB,QAAd,EAAwB,CAAxB,CAA9B;AACD,KApGmB;;AAAA,sBAsGpBwB,UAtGoB,yBAsGP;AACX,UAAMC,OAAOtC,EAAE,KAAKkC,aAAL,EAAF,CAAb;;AAEA;AACA,WAAKK,iBAAL,CAAuBD,KAAKE,IAAL,CAAUtB,SAASC,KAAnB,CAAvB,EAAkD,KAAKa,QAAL,EAAlD;AACA,WAAKO,iBAAL,CAAuBD,KAAKE,IAAL,CAAUtB,SAASE,OAAnB,CAAvB,EAAoD,KAAKa,WAAL,EAApD;;AAEAK,WAAKG,WAAL,CAAoB1B,UAAUC,IAA9B,SAAsCD,UAAUE,IAAhD;;AAEA,WAAKyB,aAAL;AACD,KAhHmB;;AAkHpB;;AAlHoB,sBAoHpBT,WApHoB,0BAoHN;AACZ,aAAO,KAAKU,OAAL,CAAaC,YAAb,CAA0B,cAA1B,MACD,OAAO,KAAKR,MAAL,CAAYxB,OAAnB,KAA+B,UAA/B,GACE,KAAKwB,MAAL,CAAYxB,OAAZ,CAAoBiC,IAApB,CAAyB,KAAKF,OAA9B,CADF,GAEE,KAAKP,MAAL,CAAYxB,OAHb,CAAP;AAID,KAzHmB;;AA4HpB;;AA5HoB,YA8HbkC,gBA9Ha,6BA8HIV,MA9HJ,EA8HY;AAC9B,aAAO,KAAKW,IAAL,CAAU,YAAY;AAC3B,YAAIC,OAAYhD,EAAE,IAAF,EAAQgD,IAAR,CAAa7C,QAAb,CAAhB;AACA,YAAM8C,UAAU,QAAOb,MAAP,yCAAOA,MAAP,OAAkB,QAAlB,GAA6BA,MAA7B,GAAsC,IAAtD;;AAEA,YAAI,CAACY,IAAD,IAAS,eAAeE,IAAf,CAAoBd,MAApB,CAAb,EAA0C;AACxC;AACD;;AAED,YAAI,CAACY,IAAL,EAAW;AACTA,iBAAO,IAAIjD,OAAJ,CAAY,IAAZ,EAAkBkD,OAAlB,CAAP;AACAjD,YAAE,IAAF,EAAQgD,IAAR,CAAa7C,QAAb,EAAuB6C,IAAvB;AACD;;AAED,YAAI,OAAOZ,MAAP,KAAkB,QAAtB,EAAgC;AAC9B,cAAIY,KAAKZ,MAAL,MAAiBe,SAArB,EAAgC;AAC9B,kBAAM,IAAIC,KAAJ,uBAA8BhB,MAA9B,OAAN;AACD;AACDY,eAAKZ,MAAL;AACD;AACF,OAnBM,CAAP;AAoBD,KAnJmB;;AAAA;AAAA;;;AA6DpB;;AA7DoB,0BA+DC;AACnB,eAAOlC,OAAP;AACD;AAjEmB;AAAA;AAAA,0BAmEC;AACnB,eAAOK,OAAP;AACD;AArEmB;AAAA;AAAA,0BAuEF;AAChB,eAAON,IAAP;AACD;AAzEmB;AAAA;AAAA,0BA2EE;AACpB,eAAOE,QAAP;AACD;AA7EmB;AAAA;AAAA,0BA+ED;AACjB,eAAOkB,KAAP;AACD;AAjFmB;AAAA;AAAA,0BAmFG;AACrB,eAAOjB,SAAP;AACD;AArFmB;AAAA;AAAA,0BAuFK;AACvB,eAAOU,WAAP;AACD;AAzFmB;;AAAA;AAAA,IA0DAL,OA1DA;;AAuJtB;;;;;;AAMAT,IAAEM,EAAF,CAAKL,IAAL,IAAyBF,QAAQ+C,gBAAjC;AACA9C,IAAEM,EAAF,CAAKL,IAAL,EAAWoD,WAAX,GAAyBtD,OAAzB;AACAC,IAAEM,EAAF,CAAKL,IAAL,EAAWqD,UAAX,GAAyB,YAAY;AACnCtD,MAAEM,EAAF,CAAKL,IAAL,IAAaI,kBAAb;AACA,WAAON,QAAQ+C,gBAAf;AACD,GAHD;;AAKA,SAAO/C,OAAP;AAED,CAtKe,CAsKbwD,MAtKa,CAAhB","file":"popover.js","sourcesContent":["import Tooltip from './tooltip'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): popover.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Popover = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'popover'\n  const VERSION             = '4.0.0-alpha.5'\n  const DATA_KEY            = 'bs.popover'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n\n  const Default = $.extend({}, Tooltip.Default, {\n    placement : 'right',\n    trigger   : 'click',\n    content   : '',\n    template  : '<div class=\"popover\" role=\"tooltip\">'\n              + '<h3 class=\"popover-title\"></h3>'\n              + '<div class=\"popover-content\"></div></div>'\n  })\n\n  const DefaultType = $.extend({}, Tooltip.DefaultType, {\n    content : '(string|element|function)'\n  })\n\n  const ClassName = {\n    FADE : 'fade',\n    SHOW : 'show'\n  }\n\n  const Selector = {\n    TITLE   : '.popover-title',\n    CONTENT : '.popover-content'\n  }\n\n  const Event = {\n    HIDE       : `hide${EVENT_KEY}`,\n    HIDDEN     : `hidden${EVENT_KEY}`,\n    SHOW       : `show${EVENT_KEY}`,\n    SHOWN      : `shown${EVENT_KEY}`,\n    INSERTED   : `inserted${EVENT_KEY}`,\n    CLICK      : `click${EVENT_KEY}`,\n    FOCUSIN    : `focusin${EVENT_KEY}`,\n    FOCUSOUT   : `focusout${EVENT_KEY}`,\n    MOUSEENTER : `mouseenter${EVENT_KEY}`,\n    MOUSELEAVE : `mouseleave${EVENT_KEY}`\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Popover extends Tooltip {\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n    static get NAME() {\n      return NAME\n    }\n\n    static get DATA_KEY() {\n      return DATA_KEY\n    }\n\n    static get Event() {\n      return Event\n    }\n\n    static get EVENT_KEY() {\n      return EVENT_KEY\n    }\n\n    static get DefaultType() {\n      return DefaultType\n    }\n\n\n    // overrides\n\n    isWithContent() {\n      return this.getTitle() || this._getContent()\n    }\n\n    getTipElement() {\n      return this.tip = this.tip || $(this.config.template)[0]\n    }\n\n    setContent() {\n      const $tip = $(this.getTipElement())\n\n      // we use append for html objects to maintain js events\n      this.setElementContent($tip.find(Selector.TITLE), this.getTitle())\n      this.setElementContent($tip.find(Selector.CONTENT), this._getContent())\n\n      $tip.removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)\n\n      this.cleanupTether()\n    }\n\n    // private\n\n    _getContent() {\n      return this.element.getAttribute('data-content')\n        || (typeof this.config.content === 'function' ?\n              this.config.content.call(this.element) :\n              this.config.content)\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data      = $(this).data(DATA_KEY)\n        const _config = typeof config === 'object' ? config : null\n\n        if (!data && /destroy|hide/.test(config)) {\n          return\n        }\n\n        if (!data) {\n          data = new Popover(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Popover._jQueryInterface\n  $.fn[NAME].Constructor = Popover\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Popover._jQueryInterface\n  }\n\n  return Popover\n\n})(jQuery)\n\nexport default Popover\n"]}
\ No newline at end of file
diff --git a/js/dist/scrollspy.js b/js/dist/scrollspy.js
index a41ef2267..803b347e2 100644
--- a/js/dist/scrollspy.js
+++ b/js/dist/scrollspy.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): scrollspy.js
+ * Bootstrap (v4.0.0-alpha.5): scrollspy.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -20,7 +20,7 @@ var ScrollSpy = function ($) {
    */
 
   var NAME = 'scrollspy';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.scrollspy';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -77,6 +77,8 @@ var ScrollSpy = function ($) {
 
   var ScrollSpy = function () {
     function ScrollSpy(element, config) {
+      var _this = this;
+
       _classCallCheck(this, ScrollSpy);
 
       this._element = element;
@@ -88,7 +90,9 @@ var ScrollSpy = function ($) {
       this._activeTarget = null;
       this._scrollHeight = 0;
 
-      $(this._scrollElement).on(Event.SCROLL, $.proxy(this._process, this));
+      $(this._scrollElement).on(Event.SCROLL, function (event) {
+        return _this._process(event);
+      });
 
       this.refresh();
       this._process();
@@ -99,7 +103,7 @@ var ScrollSpy = function ($) {
     // public
 
     ScrollSpy.prototype.refresh = function refresh() {
-      var _this = this;
+      var _this2 = this;
 
       var autoMethod = this._scrollElement !== this._scrollElement.window ? OffsetMethod.POSITION : OffsetMethod.OFFSET;
 
@@ -132,8 +136,8 @@ var ScrollSpy = function ($) {
       }).sort(function (a, b) {
         return a[0] - b[0];
       }).forEach(function (item) {
-        _this._offsets.push(item[0]);
-        _this._targets.push(item[1]);
+        _this2._offsets.push(item[0]);
+        _this2._targets.push(item[1]);
       });
     };
 
@@ -178,10 +182,14 @@ var ScrollSpy = function ($) {
       return this._scrollElement.scrollHeight || Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
     };
 
+    ScrollSpy.prototype._getOffsetHeight = function _getOffsetHeight() {
+      return this._scrollElement === window ? window.innerHeight : this._scrollElement.offsetHeight;
+    };
+
     ScrollSpy.prototype._process = function _process() {
       var scrollTop = this._getScrollTop() + this._config.offset;
       var scrollHeight = this._getScrollHeight();
-      var maxScroll = this._config.offset + scrollHeight - this._scrollElement.offsetHeight;
+      var maxScroll = this._config.offset + scrollHeight - this._getOffsetHeight();
 
       if (this._scrollHeight !== scrollHeight) {
         this.refresh();
@@ -193,9 +201,10 @@ var ScrollSpy = function ($) {
         if (this._activeTarget !== target) {
           this._activate(target);
         }
+        return;
       }
 
-      if (this._activeTarget && scrollTop < this._offsets[0]) {
+      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
         this._activeTarget = null;
         this._clear();
         return;
@@ -228,7 +237,7 @@ var ScrollSpy = function ($) {
       } else {
         // todo (fat) this is kinda sus...
         // recursively add actives to tested nav-links
-        $link.parents(Selector.LI).find(Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
+        $link.parents(Selector.LI).find('> ' + Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
       }
 
       $(this._scrollElement).trigger(Event.ACTIVATE, {
@@ -245,7 +254,7 @@ var ScrollSpy = function ($) {
     ScrollSpy._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY);
-        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' && config || null;
+        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' && config;
 
         if (!data) {
           data = new ScrollSpy(this, _config);
diff --git a/js/dist/scrollspy.js.map b/js/dist/scrollspy.js.map
index 906c90f93..758a94fcd 100644
--- a/js/dist/scrollspy.js.map
+++ b/js/dist/scrollspy.js.map
@@ -1 +1 @@
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): scrollspy.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst ScrollSpy = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME               = 'scrollspy'\n  const VERSION            = '4.0.0-alpha.4'\n  const DATA_KEY           = 'bs.scrollspy'\n  const EVENT_KEY          = `.${DATA_KEY}`\n  const DATA_API_KEY       = '.data-api'\n  const JQUERY_NO_CONFLICT = $.fn[NAME]\n\n  const Default = {\n    offset : 10,\n    method : 'auto',\n    target : ''\n  }\n\n  const DefaultType = {\n    offset : 'number',\n    method : 'string',\n    target : '(string|element)'\n  }\n\n  const Event = {\n    ACTIVATE      : `activate${EVENT_KEY}`,\n    SCROLL        : `scroll${EVENT_KEY}`,\n    LOAD_DATA_API : `load${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    DROPDOWN_ITEM : 'dropdown-item',\n    DROPDOWN_MENU : 'dropdown-menu',\n    NAV_LINK      : 'nav-link',\n    NAV           : 'nav',\n    ACTIVE        : 'active'\n  }\n\n  const Selector = {\n    DATA_SPY        : '[data-spy=\"scroll\"]',\n    ACTIVE          : '.active',\n    LIST_ITEM       : '.list-item',\n    LI              : 'li',\n    LI_DROPDOWN     : 'li.dropdown',\n    NAV_LINKS       : '.nav-link',\n    DROPDOWN        : '.dropdown',\n    DROPDOWN_ITEMS  : '.dropdown-item',\n    DROPDOWN_TOGGLE : '.dropdown-toggle'\n  }\n\n  const OffsetMethod = {\n    OFFSET   : 'offset',\n    POSITION : 'position'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class ScrollSpy {\n\n    constructor(element, config) {\n      this._element       = element\n      this._scrollElement = element.tagName === 'BODY' ? window : element\n      this._config        = this._getConfig(config)\n      this._selector      = `${this._config.target} ${Selector.NAV_LINKS},`\n                          + `${this._config.target} ${Selector.DROPDOWN_ITEMS}`\n      this._offsets       = []\n      this._targets       = []\n      this._activeTarget  = null\n      this._scrollHeight  = 0\n\n      $(this._scrollElement).on(Event.SCROLL, $.proxy(this._process, this))\n\n      this.refresh()\n      this._process()\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    refresh() {\n      let autoMethod = this._scrollElement !== this._scrollElement.window ?\n        OffsetMethod.POSITION : OffsetMethod.OFFSET\n\n      let offsetMethod = this._config.method === 'auto' ?\n        autoMethod : this._config.method\n\n      let offsetBase = offsetMethod === OffsetMethod.POSITION ?\n        this._getScrollTop() : 0\n\n      this._offsets = []\n      this._targets = []\n\n      this._scrollHeight = this._getScrollHeight()\n\n      let targets = $.makeArray($(this._selector))\n\n      targets\n        .map((element) => {\n          let target\n          let targetSelector = Util.getSelectorFromElement(element)\n\n          if (targetSelector) {\n            target = $(targetSelector)[0]\n          }\n\n          if (target && (target.offsetWidth || target.offsetHeight)) {\n            // todo (fat): remove sketch reliance on jQuery position/offset\n            return [\n              $(target)[offsetMethod]().top + offsetBase,\n              targetSelector\n            ]\n          }\n          return null\n        })\n        .filter((item)  => item)\n        .sort((a, b)    => a[0] - b[0])\n        .forEach((item) => {\n          this._offsets.push(item[0])\n          this._targets.push(item[1])\n        })\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      $(this._scrollElement).off(EVENT_KEY)\n\n      this._element       = null\n      this._scrollElement = null\n      this._config        = null\n      this._selector      = null\n      this._offsets       = null\n      this._targets       = null\n      this._activeTarget  = null\n      this._scrollHeight  = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n\n      if (typeof config.target !== 'string') {\n        let id = $(config.target).attr('id')\n        if (!id) {\n          id = Util.getUID(NAME)\n          $(config.target).attr('id', id)\n        }\n        config.target = `#${id}`\n      }\n\n      Util.typeCheckConfig(NAME, config, DefaultType)\n\n      return config\n    }\n\n    _getScrollTop() {\n      return this._scrollElement === window ?\n          this._scrollElement.scrollY : this._scrollElement.scrollTop\n    }\n\n    _getScrollHeight() {\n      return this._scrollElement.scrollHeight || Math.max(\n        document.body.scrollHeight,\n        document.documentElement.scrollHeight\n      )\n    }\n\n    _process() {\n      let scrollTop    = this._getScrollTop() + this._config.offset\n      let scrollHeight = this._getScrollHeight()\n      let maxScroll    = this._config.offset\n        + scrollHeight\n        - this._scrollElement.offsetHeight\n\n      if (this._scrollHeight !== scrollHeight) {\n        this.refresh()\n      }\n\n      if (scrollTop >= maxScroll) {\n        let target = this._targets[this._targets.length - 1]\n\n        if (this._activeTarget !== target) {\n          this._activate(target)\n        }\n      }\n\n      if (this._activeTarget && scrollTop < this._offsets[0]) {\n        this._activeTarget = null\n        this._clear()\n        return\n      }\n\n      for (let i = this._offsets.length; i--;) {\n        let isActiveTarget = this._activeTarget !== this._targets[i]\n            && scrollTop >= this._offsets[i]\n            && (this._offsets[i + 1] === undefined ||\n                scrollTop < this._offsets[i + 1])\n\n        if (isActiveTarget) {\n          this._activate(this._targets[i])\n        }\n      }\n    }\n\n    _activate(target) {\n      this._activeTarget = target\n\n      this._clear()\n\n      let queries = this._selector.split(',')\n      queries     = queries.map((selector) => {\n        return `${selector}[data-target=\"${target}\"],` +\n               `${selector}[href=\"${target}\"]`\n      })\n\n      let $link = $(queries.join(','))\n\n      if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {\n        $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)\n        $link.addClass(ClassName.ACTIVE)\n      } else {\n        // todo (fat) this is kinda sus...\n        // recursively add actives to tested nav-links\n        $link.parents(Selector.LI).find(Selector.NAV_LINKS).addClass(ClassName.ACTIVE)\n      }\n\n      $(this._scrollElement).trigger(Event.ACTIVATE, {\n        relatedTarget: target\n      })\n    }\n\n    _clear() {\n      $(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE)\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data    = $(this).data(DATA_KEY)\n        let _config = typeof config === 'object' && config || null\n\n        if (!data) {\n          data = new ScrollSpy(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(window).on(Event.LOAD_DATA_API, () => {\n    let scrollSpys = $.makeArray($(Selector.DATA_SPY))\n\n    for (let i = scrollSpys.length; i--;) {\n      let $spy = $(scrollSpys[i])\n      ScrollSpy._jQueryInterface.call($spy, $spy.data())\n    }\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = ScrollSpy._jQueryInterface\n  $.fn[NAME].Constructor = ScrollSpy\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return ScrollSpy._jQueryInterface\n  }\n\n  return ScrollSpy\n\n})(jQuery)\n\nexport default ScrollSpy\n"]}
\ No newline at end of file
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): scrollspy.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst ScrollSpy = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME               = 'scrollspy'\n  const VERSION            = '4.0.0-alpha.5'\n  const DATA_KEY           = 'bs.scrollspy'\n  const EVENT_KEY          = `.${DATA_KEY}`\n  const DATA_API_KEY       = '.data-api'\n  const JQUERY_NO_CONFLICT = $.fn[NAME]\n\n  const Default = {\n    offset : 10,\n    method : 'auto',\n    target : ''\n  }\n\n  const DefaultType = {\n    offset : 'number',\n    method : 'string',\n    target : '(string|element)'\n  }\n\n  const Event = {\n    ACTIVATE      : `activate${EVENT_KEY}`,\n    SCROLL        : `scroll${EVENT_KEY}`,\n    LOAD_DATA_API : `load${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    DROPDOWN_ITEM : 'dropdown-item',\n    DROPDOWN_MENU : 'dropdown-menu',\n    NAV_LINK      : 'nav-link',\n    NAV           : 'nav',\n    ACTIVE        : 'active'\n  }\n\n  const Selector = {\n    DATA_SPY        : '[data-spy=\"scroll\"]',\n    ACTIVE          : '.active',\n    LIST_ITEM       : '.list-item',\n    LI              : 'li',\n    LI_DROPDOWN     : 'li.dropdown',\n    NAV_LINKS       : '.nav-link',\n    DROPDOWN        : '.dropdown',\n    DROPDOWN_ITEMS  : '.dropdown-item',\n    DROPDOWN_TOGGLE : '.dropdown-toggle'\n  }\n\n  const OffsetMethod = {\n    OFFSET   : 'offset',\n    POSITION : 'position'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class ScrollSpy {\n\n    constructor(element, config) {\n      this._element       = element\n      this._scrollElement = element.tagName === 'BODY' ? window : element\n      this._config        = this._getConfig(config)\n      this._selector      = `${this._config.target} ${Selector.NAV_LINKS},`\n                          + `${this._config.target} ${Selector.DROPDOWN_ITEMS}`\n      this._offsets       = []\n      this._targets       = []\n      this._activeTarget  = null\n      this._scrollHeight  = 0\n\n      $(this._scrollElement).on(Event.SCROLL, (event) => this._process(event))\n\n      this.refresh()\n      this._process()\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n\n    // public\n\n    refresh() {\n      const autoMethod = this._scrollElement !== this._scrollElement.window ?\n        OffsetMethod.POSITION : OffsetMethod.OFFSET\n\n      const offsetMethod = this._config.method === 'auto' ?\n        autoMethod : this._config.method\n\n      const offsetBase = offsetMethod === OffsetMethod.POSITION ?\n        this._getScrollTop() : 0\n\n      this._offsets = []\n      this._targets = []\n\n      this._scrollHeight = this._getScrollHeight()\n\n      const targets = $.makeArray($(this._selector))\n\n      targets\n        .map((element) => {\n          let target\n          const targetSelector = Util.getSelectorFromElement(element)\n\n          if (targetSelector) {\n            target = $(targetSelector)[0]\n          }\n\n          if (target && (target.offsetWidth || target.offsetHeight)) {\n            // todo (fat): remove sketch reliance on jQuery position/offset\n            return [\n              $(target)[offsetMethod]().top + offsetBase,\n              targetSelector\n            ]\n          }\n          return null\n        })\n        .filter((item)  => item)\n        .sort((a, b)    => a[0] - b[0])\n        .forEach((item) => {\n          this._offsets.push(item[0])\n          this._targets.push(item[1])\n        })\n    }\n\n    dispose() {\n      $.removeData(this._element, DATA_KEY)\n      $(this._scrollElement).off(EVENT_KEY)\n\n      this._element       = null\n      this._scrollElement = null\n      this._config        = null\n      this._selector      = null\n      this._offsets       = null\n      this._targets       = null\n      this._activeTarget  = null\n      this._scrollHeight  = null\n    }\n\n\n    // private\n\n    _getConfig(config) {\n      config = $.extend({}, Default, config)\n\n      if (typeof config.target !== 'string') {\n        let id = $(config.target).attr('id')\n        if (!id) {\n          id = Util.getUID(NAME)\n          $(config.target).attr('id', id)\n        }\n        config.target = `#${id}`\n      }\n\n      Util.typeCheckConfig(NAME, config, DefaultType)\n\n      return config\n    }\n\n    _getScrollTop() {\n      return this._scrollElement === window ?\n          this._scrollElement.scrollY : this._scrollElement.scrollTop\n    }\n\n    _getScrollHeight() {\n      return this._scrollElement.scrollHeight || Math.max(\n        document.body.scrollHeight,\n        document.documentElement.scrollHeight\n      )\n    }\n\n    _getOffsetHeight() {\n      return this._scrollElement === window ?\n          window.innerHeight : this._scrollElement.offsetHeight\n    }\n\n    _process() {\n      const scrollTop    = this._getScrollTop() + this._config.offset\n      const scrollHeight = this._getScrollHeight()\n      const maxScroll    = this._config.offset\n        + scrollHeight\n        - this._getOffsetHeight()\n\n      if (this._scrollHeight !== scrollHeight) {\n        this.refresh()\n      }\n\n      if (scrollTop >= maxScroll) {\n        const target = this._targets[this._targets.length - 1]\n\n        if (this._activeTarget !== target) {\n          this._activate(target)\n        }\n        return\n      }\n\n      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {\n        this._activeTarget = null\n        this._clear()\n        return\n      }\n\n      for (let i = this._offsets.length; i--;) {\n        const isActiveTarget = this._activeTarget !== this._targets[i]\n            && scrollTop >= this._offsets[i]\n            && (this._offsets[i + 1] === undefined ||\n                scrollTop < this._offsets[i + 1])\n\n        if (isActiveTarget) {\n          this._activate(this._targets[i])\n        }\n      }\n    }\n\n    _activate(target) {\n      this._activeTarget = target\n\n      this._clear()\n\n      let queries = this._selector.split(',')\n      queries     = queries.map((selector) => {\n        return `${selector}[data-target=\"${target}\"],` +\n               `${selector}[href=\"${target}\"]`\n      })\n\n      const $link = $(queries.join(','))\n\n      if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {\n        $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)\n        $link.addClass(ClassName.ACTIVE)\n      } else {\n        // todo (fat) this is kinda sus...\n        // recursively add actives to tested nav-links\n        $link.parents(Selector.LI).find(`> ${Selector.NAV_LINKS}`).addClass(ClassName.ACTIVE)\n      }\n\n      $(this._scrollElement).trigger(Event.ACTIVATE, {\n        relatedTarget: target\n      })\n    }\n\n    _clear() {\n      $(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE)\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data      = $(this).data(DATA_KEY)\n        const _config = typeof config === 'object' && config\n\n        if (!data) {\n          data = new ScrollSpy(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(window).on(Event.LOAD_DATA_API, () => {\n    const scrollSpys = $.makeArray($(Selector.DATA_SPY))\n\n    for (let i = scrollSpys.length; i--;) {\n      const $spy = $(scrollSpys[i])\n      ScrollSpy._jQueryInterface.call($spy, $spy.data())\n    }\n  })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = ScrollSpy._jQueryInterface\n  $.fn[NAME].Constructor = ScrollSpy\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return ScrollSpy._jQueryInterface\n  }\n\n  return ScrollSpy\n\n})(jQuery)\n\nexport default ScrollSpy\n"]}
\ No newline at end of file
diff --git a/js/dist/tab.js b/js/dist/tab.js
index 6bbafb58b..34cc97187 100644
--- a/js/dist/tab.js
+++ b/js/dist/tab.js
@@ -4,7 +4,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): tab.js
+ * Bootstrap (v4.0.0-alpha.5): tab.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ var Tab = function ($) {
    */
 
   var NAME = 'tab';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.tab';
   var EVENT_KEY = '.' + DATA_KEY;
   var DATA_API_KEY = '.data-api';
@@ -36,15 +36,16 @@ var Tab = function ($) {
   var ClassName = {
     DROPDOWN_MENU: 'dropdown-menu',
     ACTIVE: 'active',
+    DISABLED: 'disabled',
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
     A: 'a',
     LI: 'li',
     DROPDOWN: '.dropdown',
-    UL: 'ul:not(.dropdown-menu)',
+    LIST: 'ul:not(.dropdown-menu), ol:not(.dropdown-menu)',
     FADE_CHILD: '> .nav-item .fade, > .fade',
     ACTIVE: '.active',
     ACTIVE_CHILD: '> .nav-item > .active, > .active',
@@ -73,17 +74,17 @@ var Tab = function ($) {
     Tab.prototype.show = function show() {
       var _this = this;
 
-      if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $(this._element).hasClass(ClassName.ACTIVE)) {
+      if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $(this._element).hasClass(ClassName.ACTIVE) || $(this._element).hasClass(ClassName.DISABLED)) {
         return;
       }
 
       var target = void 0;
       var previous = void 0;
-      var ulElement = $(this._element).closest(Selector.UL)[0];
+      var listElement = $(this._element).closest(Selector.LIST)[0];
       var selector = Util.getSelectorFromElement(this._element);
 
-      if (ulElement) {
-        previous = $.makeArray($(ulElement).find(Selector.ACTIVE));
+      if (listElement) {
+        previous = $.makeArray($(listElement).find(Selector.ACTIVE));
         previous = previous[previous.length - 1];
       }
 
@@ -109,7 +110,7 @@ var Tab = function ($) {
         target = $(selector)[0];
       }
 
-      this._activate(this._element, ulElement);
+      this._activate(this._element, listElement);
 
       var complete = function complete() {
         var hiddenEvent = $.Event(Event.HIDDEN, {
@@ -139,10 +140,14 @@ var Tab = function ($) {
     // private
 
     Tab.prototype._activate = function _activate(element, container, callback) {
+      var _this2 = this;
+
       var active = $(container).find(Selector.ACTIVE_CHILD)[0];
       var isTransitioning = callback && Util.supportsTransitionEnd() && (active && $(active).hasClass(ClassName.FADE) || Boolean($(container).find(Selector.FADE_CHILD)[0]));
 
-      var complete = $.proxy(this._transitionComplete, this, element, active, isTransitioning, callback);
+      var complete = function complete() {
+        return _this2._transitionComplete(element, active, isTransitioning, callback);
+      };
 
       if (active && isTransitioning) {
         $(active).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
@@ -151,7 +156,7 @@ var Tab = function ($) {
       }
 
       if (active) {
-        $(active).removeClass(ClassName.IN);
+        $(active).removeClass(ClassName.SHOW);
       }
     };
 
@@ -159,7 +164,7 @@ var Tab = function ($) {
       if (active) {
         $(active).removeClass(ClassName.ACTIVE);
 
-        var dropdownChild = $(active).find(Selector.DROPDOWN_ACTIVE_CHILD)[0];
+        var dropdownChild = $(active.parentNode).find(Selector.DROPDOWN_ACTIVE_CHILD)[0];
 
         if (dropdownChild) {
           $(dropdownChild).removeClass(ClassName.ACTIVE);
@@ -173,7 +178,7 @@ var Tab = function ($) {
 
       if (isTransitioning) {
         Util.reflow(element);
-        $(element).addClass(ClassName.IN);
+        $(element).addClass(ClassName.SHOW);
       } else {
         $(element).removeClass(ClassName.FADE);
       }
@@ -201,7 +206,7 @@ var Tab = function ($) {
         var data = $this.data(DATA_KEY);
 
         if (!data) {
-          data = data = new Tab(this);
+          data = new Tab(this);
           $this.data(DATA_KEY, data);
         }
 
diff --git a/js/dist/tab.js.map b/js/dist/tab.js.map
index 84e934bcd..5eadeec95 100644
--- a/js/dist/tab.js.map
+++ b/js/dist/tab.js.map
@@ -1 +1 @@
-{"version":3,"sources":["../src/tab.js"],"names":["Tab","$","NAME","VERSION","DATA_KEY","EVENT_KEY","DATA_API_KEY","JQUERY_NO_CONFLICT","fn","TRANSITION_DURATION","Event","HIDE","HIDDEN","SHOW","SHOWN","CLICK_DATA_API","ClassName","DROPDOWN_MENU","ACTIVE","FADE","IN","Selector","A","LI","DROPDOWN","UL","FADE_CHILD","ACTIVE_CHILD","DATA_TOGGLE","DROPDOWN_TOGGLE","DROPDOWN_ACTIVE_CHILD","element","_element","show","parentNode","nodeType","Node","ELEMENT_NODE","hasClass","target","previous","ulElement","closest","selector","Util","getSelectorFromElement","makeArray","find","length","hideEvent","relatedTarget","showEvent","trigger","isDefaultPrevented","_activate","complete","hiddenEvent","shownEvent","dispose","removeClass","container","callback","active","isTransitioning","supportsTransitionEnd","Boolean","proxy","_transitionComplete","one","TRANSITION_END","emulateTransitionEnd","dropdownChild","setAttribute","addClass","reflow","dropdownElement","_jQueryInterface","config","each","$this","data","undefined","Error","document","on","event","preventDefault","call","Constructor","noConflict","jQuery"],"mappings":";;;;AAGA;;;;;;;AAOA,IAAMA,MAAO,UAACC,CAAD,EAAO;;AAGlB;;;;;;AAMA,MAAMC,OAAsB,KAA5B;AACA,MAAMC,UAAsB,eAA5B;AACA,MAAMC,WAAsB,QAA5B;AACA,MAAMC,kBAA0BD,QAAhC;AACA,MAAME,eAAsB,WAA5B;AACA,MAAMC,qBAAsBN,EAAEO,EAAF,CAAKN,IAAL,CAA5B;AACA,MAAMO,sBAAsB,GAA5B;;AAEA,MAAMC,QAAQ;AACZC,mBAAwBN,SADZ;AAEZO,uBAA0BP,SAFd;AAGZQ,mBAAwBR,SAHZ;AAIZS,qBAAyBT,SAJb;AAKZU,8BAAyBV,SAAzB,GAAqCC;AALzB,GAAd;;AAQA,MAAMU,YAAY;AAChBC,mBAAgB,eADA;AAEhBC,YAAgB,QAFA;AAGhBC,UAAgB,MAHA;AAIhBC,QAAgB;AAJA,GAAlB;;AAOA,MAAMC,WAAW;AACfC,OAAwB,GADT;AAEfC,QAAwB,IAFT;AAGfC,cAAwB,WAHT;AAIfC,QAAwB,wBAJT;AAKfC,gBAAwB,4BALT;AAMfR,YAAwB,SANT;AAOfS,kBAAwB,kCAPT;AAQfC,iBAAwB,2CART;AASfC,qBAAwB,kBATT;AAUfC,2BAAwB;AAVT,GAAjB;;AAcA;;;;;;AA9CkB,MAoDZ9B,GApDY;AAsDhB,iBAAY+B,OAAZ,EAAqB;AAAA;;AACnB,WAAKC,QAAL,GAAgBD,OAAhB;AACD;;AAGD;;AAOA;;AAlEgB,kBAoEhBE,IApEgB,mBAoET;AAAA;;AACL,UAAI,KAAKD,QAAL,CAAcE,UAAd,IACA,KAAKF,QAAL,CAAcE,UAAd,CAAyBC,QAAzB,KAAsCC,KAAKC,YAD3C,IAEApC,EAAE,KAAK+B,QAAP,EAAiBM,QAAjB,CAA0BtB,UAAUE,MAApC,CAFJ,EAEkD;AAChD;AACD;;AAED,UAAIqB,eAAJ;AACA,UAAIC,iBAAJ;AACA,UAAIC,YAAYxC,EAAE,KAAK+B,QAAP,EAAiBU,OAAjB,CAAyBrB,SAASI,EAAlC,EAAsC,CAAtC,CAAhB;AACA,UAAIkB,WAAYC,KAAKC,sBAAL,CAA4B,KAAKb,QAAjC,CAAhB;;AAEA,UAAIS,SAAJ,EAAe;AACbD,mBAAWvC,EAAE6C,SAAF,CAAY7C,EAAEwC,SAAF,EAAaM,IAAb,CAAkB1B,SAASH,MAA3B,CAAZ,CAAX;AACAsB,mBAAWA,SAASA,SAASQ,MAAT,GAAkB,CAA3B,CAAX;AACD;;AAED,UAAIC,YAAYhD,EAAES,KAAF,CAAQA,MAAMC,IAAd,EAAoB;AAClCuC,uBAAe,KAAKlB;AADc,OAApB,CAAhB;;AAIA,UAAImB,YAAYlD,EAAES,KAAF,CAAQA,MAAMG,IAAd,EAAoB;AAClCqC,uBAAeV;AADmB,OAApB,CAAhB;;AAIA,UAAIA,QAAJ,EAAc;AACZvC,UAAEuC,QAAF,EAAYY,OAAZ,CAAoBH,SAApB;AACD;;AAEDhD,QAAE,KAAK+B,QAAP,EAAiBoB,OAAjB,CAAyBD,SAAzB;;AAEA,UAAIA,UAAUE,kBAAV,MACAJ,UAAUI,kBAAV,EADJ,EACqC;AACnC;AACD;;AAED,UAAIV,QAAJ,EAAc;AACZJ,iBAAStC,EAAE0C,QAAF,EAAY,CAAZ,CAAT;AACD;;AAED,WAAKW,SAAL,CACE,KAAKtB,QADP,EAEES,SAFF;;AAKA,UAAIc,WAAW,SAAXA,QAAW,GAAM;AACnB,YAAIC,cAAcvD,EAAES,KAAF,CAAQA,MAAME,MAAd,EAAsB;AACtCsC,yBAAe,MAAKlB;AADkB,SAAtB,CAAlB;;AAIA,YAAIyB,aAAcxD,EAAES,KAAF,CAAQA,MAAMI,KAAd,EAAqB;AACrCoC,yBAAeV;AADsB,SAArB,CAAlB;;AAIAvC,UAAEuC,QAAF,EAAYY,OAAZ,CAAoBI,WAApB;AACAvD,UAAE,MAAK+B,QAAP,EAAiBoB,OAAjB,CAAyBK,UAAzB;AACD,OAXD;;AAaA,UAAIlB,MAAJ,EAAY;AACV,aAAKe,SAAL,CAAef,MAAf,EAAuBA,OAAOL,UAA9B,EAA0CqB,QAA1C;AACD,OAFD,MAEO;AACLA;AACD;AACF,KAnIe;;AAAA,kBAqIhBG,OArIgB,sBAqIN;AACRzD,QAAE0D,WAAF,CAAc,KAAK3B,QAAnB,EAA6B5B,QAA7B;AACA,WAAK4B,QAAL,GAAgB,IAAhB;AACD,KAxIe;;AA2IhB;;AA3IgB,kBA6IhBsB,SA7IgB,sBA6INvB,OA7IM,EA6IG6B,SA7IH,EA6IcC,QA7Id,EA6IwB;AACtC,UAAIC,SAAkB7D,EAAE2D,SAAF,EAAab,IAAb,CAAkB1B,SAASM,YAA3B,EAAyC,CAAzC,CAAtB;AACA,UAAIoC,kBAAkBF,YACjBjB,KAAKoB,qBAAL,EADiB,KAEfF,UAAU7D,EAAE6D,MAAF,EAAUxB,QAAV,CAAmBtB,UAAUG,IAA7B,CAAX,IACE8C,QAAQhE,EAAE2D,SAAF,EAAab,IAAb,CAAkB1B,SAASK,UAA3B,EAAuC,CAAvC,CAAR,CAHc,CAAtB;;AAKA,UAAI6B,WAAWtD,EAAEiE,KAAF,CACb,KAAKC,mBADQ,EAEb,IAFa,EAGbpC,OAHa,EAIb+B,MAJa,EAKbC,eALa,EAMbF,QANa,CAAf;;AASA,UAAIC,UAAUC,eAAd,EAA+B;AAC7B9D,UAAE6D,MAAF,EACGM,GADH,CACOxB,KAAKyB,cADZ,EAC4Bd,QAD5B,EAEGe,oBAFH,CAEwB7D,mBAFxB;AAID,OALD,MAKO;AACL8C;AACD;;AAED,UAAIO,MAAJ,EAAY;AACV7D,UAAE6D,MAAF,EAAUH,WAAV,CAAsB3C,UAAUI,EAAhC;AACD;AACF,KAzKe;;AAAA,kBA2KhB+C,mBA3KgB,gCA2KIpC,OA3KJ,EA2Ka+B,MA3Kb,EA2KqBC,eA3KrB,EA2KsCF,QA3KtC,EA2KgD;AAC9D,UAAIC,MAAJ,EAAY;AACV7D,UAAE6D,MAAF,EAAUH,WAAV,CAAsB3C,UAAUE,MAAhC;;AAEA,YAAIqD,gBAAgBtE,EAAE6D,MAAF,EAAUf,IAAV,CAClB1B,SAASS,qBADS,EAElB,CAFkB,CAApB;;AAIA,YAAIyC,aAAJ,EAAmB;AACjBtE,YAAEsE,aAAF,EAAiBZ,WAAjB,CAA6B3C,UAAUE,MAAvC;AACD;;AAED4C,eAAOU,YAAP,CAAoB,eAApB,EAAqC,KAArC;AACD;;AAEDvE,QAAE8B,OAAF,EAAW0C,QAAX,CAAoBzD,UAAUE,MAA9B;AACAa,cAAQyC,YAAR,CAAqB,eAArB,EAAsC,IAAtC;;AAEA,UAAIT,eAAJ,EAAqB;AACnBnB,aAAK8B,MAAL,CAAY3C,OAAZ;AACA9B,UAAE8B,OAAF,EAAW0C,QAAX,CAAoBzD,UAAUI,EAA9B;AACD,OAHD,MAGO;AACLnB,UAAE8B,OAAF,EAAW4B,WAAX,CAAuB3C,UAAUG,IAAjC;AACD;;AAED,UAAIY,QAAQG,UAAR,IACAjC,EAAE8B,QAAQG,UAAV,EAAsBI,QAAtB,CAA+BtB,UAAUC,aAAzC,CADJ,EAC8D;;AAE5D,YAAI0D,kBAAkB1E,EAAE8B,OAAF,EAAWW,OAAX,CAAmBrB,SAASG,QAA5B,EA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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): tab.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Tab = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'tab'\n  const VERSION             = '4.0.0-alpha.4'\n  const DATA_KEY            = 'bs.tab'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 150\n\n  const Event = {\n    HIDE           : `hide${EVENT_KEY}`,\n    HIDDEN         : `hidden${EVENT_KEY}`,\n    SHOW           : `show${EVENT_KEY}`,\n    SHOWN          : `shown${EVENT_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    DROPDOWN_MENU : 'dropdown-menu',\n    ACTIVE        : 'active',\n    FADE          : 'fade',\n    IN            : 'in'\n  }\n\n  const Selector = {\n    A                     : 'a',\n    LI                    : 'li',\n    DROPDOWN              : '.dropdown',\n    UL                    : 'ul:not(.dropdown-menu)',\n    FADE_CHILD            : '> .nav-item .fade, > .fade',\n    ACTIVE                : '.active',\n    ACTIVE_CHILD          : '> .nav-item > .active, > .active',\n    DATA_TOGGLE           : '[data-toggle=\"tab\"], [data-toggle=\"pill\"]',\n    DROPDOWN_TOGGLE       : '.dropdown-toggle',\n    DROPDOWN_ACTIVE_CHILD : '> .dropdown-menu .active'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Tab {\n\n    constructor(element) {\n      this._element = element\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    show() {\n      if (this._element.parentNode &&\n         (this._element.parentNode.nodeType === Node.ELEMENT_NODE) &&\n         ($(this._element).hasClass(ClassName.ACTIVE))) {\n        return\n      }\n\n      let target\n      let previous\n      let ulElement = $(this._element).closest(Selector.UL)[0]\n      let selector  = Util.getSelectorFromElement(this._element)\n\n      if (ulElement) {\n        previous = $.makeArray($(ulElement).find(Selector.ACTIVE))\n        previous = previous[previous.length - 1]\n      }\n\n      let hideEvent = $.Event(Event.HIDE, {\n        relatedTarget: this._element\n      })\n\n      let showEvent = $.Event(Event.SHOW, {\n        relatedTarget: previous\n      })\n\n      if (previous) {\n        $(previous).trigger(hideEvent)\n      }\n\n      $(this._element).trigger(showEvent)\n\n      if (showEvent.isDefaultPrevented() ||\n         (hideEvent.isDefaultPrevented())) {\n        return\n      }\n\n      if (selector) {\n        target = $(selector)[0]\n      }\n\n      this._activate(\n        this._element,\n        ulElement\n      )\n\n      let complete = () => {\n        let hiddenEvent = $.Event(Event.HIDDEN, {\n          relatedTarget: this._element\n        })\n\n        let shownEvent  = $.Event(Event.SHOWN, {\n          relatedTarget: previous\n        })\n\n        $(previous).trigger(hiddenEvent)\n        $(this._element).trigger(shownEvent)\n      }\n\n      if (target) {\n        this._activate(target, target.parentNode, complete)\n      } else {\n        complete()\n      }\n    }\n\n    dispose() {\n      $.removeClass(this._element, DATA_KEY)\n      this._element = null\n    }\n\n\n    // private\n\n    _activate(element, container, callback) {\n      let active          = $(container).find(Selector.ACTIVE_CHILD)[0]\n      let isTransitioning = callback\n        && Util.supportsTransitionEnd()\n        && ((active && $(active).hasClass(ClassName.FADE))\n           || Boolean($(container).find(Selector.FADE_CHILD)[0]))\n\n      let complete = $.proxy(\n        this._transitionComplete,\n        this,\n        element,\n        active,\n        isTransitioning,\n        callback\n      )\n\n      if (active && isTransitioning) {\n        $(active)\n          .one(Util.TRANSITION_END, complete)\n          .emulateTransitionEnd(TRANSITION_DURATION)\n\n      } else {\n        complete()\n      }\n\n      if (active) {\n        $(active).removeClass(ClassName.IN)\n      }\n    }\n\n    _transitionComplete(element, active, isTransitioning, callback) {\n      if (active) {\n        $(active).removeClass(ClassName.ACTIVE)\n\n        let dropdownChild = $(active).find(\n          Selector.DROPDOWN_ACTIVE_CHILD\n        )[0]\n\n        if (dropdownChild) {\n          $(dropdownChild).removeClass(ClassName.ACTIVE)\n        }\n\n        active.setAttribute('aria-expanded', false)\n      }\n\n      $(element).addClass(ClassName.ACTIVE)\n      element.setAttribute('aria-expanded', true)\n\n      if (isTransitioning) {\n        Util.reflow(element)\n        $(element).addClass(ClassName.IN)\n      } else {\n        $(element).removeClass(ClassName.FADE)\n      }\n\n      if (element.parentNode &&\n         ($(element.parentNode).hasClass(ClassName.DROPDOWN_MENU))) {\n\n        let dropdownElement = $(element).closest(Selector.DROPDOWN)[0]\n        if (dropdownElement) {\n          $(dropdownElement).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)\n        }\n\n        element.setAttribute('aria-expanded', true)\n      }\n\n      if (callback) {\n        callback()\n      }\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let $this = $(this)\n        let data  = $this.data(DATA_KEY)\n\n        if (!data) {\n          data = data = new Tab(this)\n          $this.data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document)\n    .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n      event.preventDefault()\n      Tab._jQueryInterface.call($(this), 'show')\n    })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Tab._jQueryInterface\n  $.fn[NAME].Constructor = Tab\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Tab._jQueryInterface\n  }\n\n  return Tab\n\n})(jQuery)\n\nexport default Tab\n"]}
\ No newline at end of file
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Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): tab.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Tab = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'tab'\n  const VERSION             = '4.0.0-alpha.5'\n  const DATA_KEY            = 'bs.tab'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const DATA_API_KEY        = '.data-api'\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 150\n\n  const Event = {\n    HIDE           : `hide${EVENT_KEY}`,\n    HIDDEN         : `hidden${EVENT_KEY}`,\n    SHOW           : `show${EVENT_KEY}`,\n    SHOWN          : `shown${EVENT_KEY}`,\n    CLICK_DATA_API : `click${EVENT_KEY}${DATA_API_KEY}`\n  }\n\n  const ClassName = {\n    DROPDOWN_MENU : 'dropdown-menu',\n    ACTIVE        : 'active',\n    DISABLED      : 'disabled',\n    FADE          : 'fade',\n    SHOW          : 'show'\n  }\n\n  const Selector = {\n    A                     : 'a',\n    LI                    : 'li',\n    DROPDOWN              : '.dropdown',\n    LIST                  : 'ul:not(.dropdown-menu), ol:not(.dropdown-menu)',\n    FADE_CHILD            : '> .nav-item .fade, > .fade',\n    ACTIVE                : '.active',\n    ACTIVE_CHILD          : '> .nav-item > .active, > .active',\n    DATA_TOGGLE           : '[data-toggle=\"tab\"], [data-toggle=\"pill\"]',\n    DROPDOWN_TOGGLE       : '.dropdown-toggle',\n    DROPDOWN_ACTIVE_CHILD : '> .dropdown-menu .active'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Tab {\n\n    constructor(element) {\n      this._element = element\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n\n    // public\n\n    show() {\n      if (this._element.parentNode &&\n          this._element.parentNode.nodeType === Node.ELEMENT_NODE &&\n          $(this._element).hasClass(ClassName.ACTIVE) ||\n          $(this._element).hasClass(ClassName.DISABLED)) {\n        return\n      }\n\n      let target\n      let previous\n      const listElement = $(this._element).closest(Selector.LIST)[0]\n      const selector    = Util.getSelectorFromElement(this._element)\n\n      if (listElement) {\n        previous = $.makeArray($(listElement).find(Selector.ACTIVE))\n        previous = previous[previous.length - 1]\n      }\n\n      const hideEvent = $.Event(Event.HIDE, {\n        relatedTarget: this._element\n      })\n\n      const showEvent = $.Event(Event.SHOW, {\n        relatedTarget: previous\n      })\n\n      if (previous) {\n        $(previous).trigger(hideEvent)\n      }\n\n      $(this._element).trigger(showEvent)\n\n      if (showEvent.isDefaultPrevented() ||\n         hideEvent.isDefaultPrevented()) {\n        return\n      }\n\n      if (selector) {\n        target = $(selector)[0]\n      }\n\n      this._activate(\n        this._element,\n        listElement\n      )\n\n      const complete = () => {\n        const hiddenEvent = $.Event(Event.HIDDEN, {\n          relatedTarget: this._element\n        })\n\n        const shownEvent = $.Event(Event.SHOWN, {\n          relatedTarget: previous\n        })\n\n        $(previous).trigger(hiddenEvent)\n        $(this._element).trigger(shownEvent)\n      }\n\n      if (target) {\n        this._activate(target, target.parentNode, complete)\n      } else {\n        complete()\n      }\n    }\n\n    dispose() {\n      $.removeClass(this._element, DATA_KEY)\n      this._element = null\n    }\n\n\n    // private\n\n    _activate(element, container, callback) {\n      const active          = $(container).find(Selector.ACTIVE_CHILD)[0]\n      const isTransitioning = callback\n        && Util.supportsTransitionEnd()\n        && (active && $(active).hasClass(ClassName.FADE)\n           || Boolean($(container).find(Selector.FADE_CHILD)[0]))\n\n      const complete = () => this._transitionComplete(\n        element,\n        active,\n        isTransitioning,\n        callback\n      )\n\n      if (active && isTransitioning) {\n        $(active)\n          .one(Util.TRANSITION_END, complete)\n          .emulateTransitionEnd(TRANSITION_DURATION)\n\n      } else {\n        complete()\n      }\n\n      if (active) {\n        $(active).removeClass(ClassName.SHOW)\n      }\n    }\n\n    _transitionComplete(element, active, isTransitioning, callback) {\n      if (active) {\n        $(active).removeClass(ClassName.ACTIVE)\n\n        const dropdownChild = $(active.parentNode).find(\n          Selector.DROPDOWN_ACTIVE_CHILD\n        )[0]\n\n        if (dropdownChild) {\n          $(dropdownChild).removeClass(ClassName.ACTIVE)\n        }\n\n        active.setAttribute('aria-expanded', false)\n      }\n\n      $(element).addClass(ClassName.ACTIVE)\n      element.setAttribute('aria-expanded', true)\n\n      if (isTransitioning) {\n        Util.reflow(element)\n        $(element).addClass(ClassName.SHOW)\n      } else {\n        $(element).removeClass(ClassName.FADE)\n      }\n\n      if (element.parentNode &&\n          $(element.parentNode).hasClass(ClassName.DROPDOWN_MENU)) {\n\n        const dropdownElement = $(element).closest(Selector.DROPDOWN)[0]\n        if (dropdownElement) {\n          $(dropdownElement).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)\n        }\n\n        element.setAttribute('aria-expanded', true)\n      }\n\n      if (callback) {\n        callback()\n      }\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        const $this = $(this)\n        let data    = $this.data(DATA_KEY)\n\n        if (!data) {\n          data = new Tab(this)\n          $this.data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Data Api implementation\n   * ------------------------------------------------------------------------\n   */\n\n  $(document)\n    .on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {\n      event.preventDefault()\n      Tab._jQueryInterface.call($(this), 'show')\n    })\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Tab._jQueryInterface\n  $.fn[NAME].Constructor = Tab\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Tab._jQueryInterface\n  }\n\n  return Tab\n\n})(jQuery)\n\nexport default Tab\n"]}
\ No newline at end of file
diff --git a/js/dist/tooltip.js b/js/dist/tooltip.js
index 33a39404a..cceebcae4 100644
--- a/js/dist/tooltip.js
+++ b/js/dist/tooltip.js
@@ -6,7 +6,7 @@ function _classCallCheck(instance, Constructor) { if (!(instance instanceof Cons
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): tooltip.js
+ * Bootstrap (v4.0.0-alpha.5): tooltip.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -17,7 +17,7 @@ var Tooltip = function ($) {
    * Check for Tether dependency
    * Tether - http://tether.io/
    */
-  if (window.Tether === undefined) {
+  if (typeof Tether === 'undefined') {
     throw new Error('Bootstrap tooltips require Tether (http://tether.io/)');
   }
 
@@ -28,7 +28,7 @@ var Tooltip = function ($) {
    */
 
   var NAME = 'tooltip';
-  var VERSION = '4.0.0-alpha.4';
+  var VERSION = '4.0.0-alpha.5';
   var DATA_KEY = 'bs.tooltip';
   var EVENT_KEY = '.' + DATA_KEY;
   var JQUERY_NO_CONFLICT = $.fn[NAME];
@@ -45,7 +45,8 @@ var Tooltip = function ($) {
     selector: false,
     placement: 'top',
     offset: '0 0',
-    constraints: []
+    constraints: [],
+    container: false
   };
 
   var DefaultType = {
@@ -58,7 +59,8 @@ var Tooltip = function ($) {
     selector: '(string|boolean)',
     placement: '(string|function)',
     offset: 'string',
-    constraints: 'array'
+    constraints: 'array',
+    container: '(string|element|boolean)'
   };
 
   var AttachmentMap = {
@@ -69,7 +71,7 @@ var Tooltip = function ($) {
   };
 
   var HoverState = {
-    IN: 'in',
+    SHOW: 'show',
     OUT: 'out'
   };
 
@@ -88,7 +90,7 @@ var Tooltip = function ($) {
 
   var ClassName = {
     FADE: 'fade',
-    IN: 'in'
+    SHOW: 'show'
   };
 
   var Selector = {
@@ -123,6 +125,7 @@ var Tooltip = function ($) {
       this._timeout = 0;
       this._hoverState = '';
       this._activeTrigger = {};
+      this._isTransitioning = false;
       this._tether = null;
 
       // protected
@@ -168,7 +171,7 @@ var Tooltip = function ($) {
         }
       } else {
 
-        if ($(this.getTipElement()).hasClass(ClassName.IN)) {
+        if ($(this.getTipElement()).hasClass(ClassName.SHOW)) {
           this._leave(null, this);
           return;
         }
@@ -185,6 +188,7 @@ var Tooltip = function ($) {
       $.removeData(this.element, this.constructor.DATA_KEY);
 
       $(this.element).off(this.constructor.EVENT_KEY);
+      $(this.element).closest('.modal').off('hide.bs.modal');
 
       if (this.tip) {
         $(this.tip).remove();
@@ -204,9 +208,15 @@ var Tooltip = function ($) {
     Tooltip.prototype.show = function show() {
       var _this = this;
 
-      var showEvent = $.Event(this.constructor.Event.SHOW);
+      if ($(this.element).css('display') === 'none') {
+        throw new Error('Please use show on visible elements');
+      }
 
+      var showEvent = $.Event(this.constructor.Event.SHOW);
       if (this.isWithContent() && this._isEnabled) {
+        if (this._isTransitioning) {
+          throw new Error('Tooltip is transitioning');
+        }
         $(this.element).trigger(showEvent);
 
         var isInTheDom = $.contains(this.element.ownerDocument.documentElement, this.element);
@@ -231,7 +241,9 @@ var Tooltip = function ($) {
 
         var attachment = this._getAttachment(placement);
 
-        $(tip).data(this.constructor.DATA_KEY, this).appendTo(document.body);
+        var container = this.config.container === false ? document.body : $(this.config.container);
+
+        $(tip).data(this.constructor.DATA_KEY, this).appendTo(container);
 
         $(this.element).trigger(this.constructor.Event.INSERTED);
 
@@ -249,11 +261,12 @@ var Tooltip = function ($) {
         Util.reflow(tip);
         this._tether.position();
 
-        $(tip).addClass(ClassName.IN);
+        $(tip).addClass(ClassName.SHOW);
 
         var complete = function complete() {
           var prevHoverState = _this._hoverState;
           _this._hoverState = null;
+          _this._isTransitioning = false;
 
           $(_this.element).trigger(_this.constructor.Event.SHOWN);
 
@@ -263,6 +276,7 @@ var Tooltip = function ($) {
         };
 
         if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+          this._isTransitioning = true;
           $(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(Tooltip._TRANSITION_DURATION);
           return;
         }
@@ -276,13 +290,17 @@ var Tooltip = function ($) {
 
       var tip = this.getTipElement();
       var hideEvent = $.Event(this.constructor.Event.HIDE);
+      if (this._isTransitioning) {
+        throw new Error('Tooltip is transitioning');
+      }
       var complete = function complete() {
-        if (_this2._hoverState !== HoverState.IN && tip.parentNode) {
+        if (_this2._hoverState !== HoverState.SHOW && tip.parentNode) {
           tip.parentNode.removeChild(tip);
         }
 
         _this2.element.removeAttribute('aria-describedby');
         $(_this2.element).trigger(_this2.constructor.Event.HIDDEN);
+        _this2._isTransitioning = false;
         _this2.cleanupTether();
 
         if (callback) {
@@ -296,10 +314,14 @@ var Tooltip = function ($) {
         return;
       }
 
-      $(tip).removeClass(ClassName.IN);
+      $(tip).removeClass(ClassName.SHOW);
 
-      if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+      this._activeTrigger[Trigger.CLICK] = false;
+      this._activeTrigger[Trigger.FOCUS] = false;
+      this._activeTrigger[Trigger.HOVER] = false;
 
+      if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+        this._isTransitioning = true;
         $(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
       } else {
         complete();
@@ -323,7 +345,7 @@ var Tooltip = function ($) {
 
       this.setElementContent($tip.find(Selector.TOOLTIP_INNER), this.getTitle());
 
-      $tip.removeClass(ClassName.FADE).removeClass(ClassName.IN);
+      $tip.removeClass(ClassName.FADE + ' ' + ClassName.SHOW);
 
       this.cleanupTether();
     };
@@ -373,13 +395,23 @@ var Tooltip = function ($) {
 
       triggers.forEach(function (trigger) {
         if (trigger === 'click') {
-          $(_this3.element).on(_this3.constructor.Event.CLICK, _this3.config.selector, $.proxy(_this3.toggle, _this3));
+          $(_this3.element).on(_this3.constructor.Event.CLICK, _this3.config.selector, function (event) {
+            return _this3.toggle(event);
+          });
         } else if (trigger !== Trigger.MANUAL) {
           var eventIn = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSEENTER : _this3.constructor.Event.FOCUSIN;
           var eventOut = trigger === Trigger.HOVER ? _this3.constructor.Event.MOUSELEAVE : _this3.constructor.Event.FOCUSOUT;
 
-          $(_this3.element).on(eventIn, _this3.config.selector, $.proxy(_this3._enter, _this3)).on(eventOut, _this3.config.selector, $.proxy(_this3._leave, _this3));
+          $(_this3.element).on(eventIn, _this3.config.selector, function (event) {
+            return _this3._enter(event);
+          }).on(eventOut, _this3.config.selector, function (event) {
+            return _this3._leave(event);
+          });
         }
+
+        $(_this3.element).closest('.modal').on('hide.bs.modal', function () {
+          return _this3.hide();
+        });
       });
 
       if (this.config.selector) {
@@ -414,14 +446,14 @@ var Tooltip = function ($) {
         context._activeTrigger[event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER] = true;
       }
 
-      if ($(context.getTipElement()).hasClass(ClassName.IN) || context._hoverState === HoverState.IN) {
-        context._hoverState = HoverState.IN;
+      if ($(context.getTipElement()).hasClass(ClassName.SHOW) || context._hoverState === HoverState.SHOW) {
+        context._hoverState = HoverState.SHOW;
         return;
       }
 
       clearTimeout(context._timeout);
 
-      context._hoverState = HoverState.IN;
+      context._hoverState = HoverState.SHOW;
 
       if (!context.config.delay || !context.config.delay.show) {
         context.show();
@@ -429,7 +461,7 @@ var Tooltip = function ($) {
       }
 
       context._timeout = setTimeout(function () {
-        if (context._hoverState === HoverState.IN) {
+        if (context._hoverState === HoverState.SHOW) {
           context.show();
         }
       }, context.config.delay.show);
@@ -513,9 +545,9 @@ var Tooltip = function ($) {
     Tooltip._jQueryInterface = function _jQueryInterface(config) {
       return this.each(function () {
         var data = $(this).data(DATA_KEY);
-        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' ? config : null;
+        var _config = (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' && config;
 
-        if (!data && /destroy|hide/.test(config)) {
+        if (!data && /dispose|hide/.test(config)) {
           return;
         }
 
diff --git a/js/dist/tooltip.js.map b/js/dist/tooltip.js.map
index e13860cb2..555dcee9b 100644
--- a/js/dist/tooltip.js.map
+++ b/js/dist/tooltip.js.map
@@ -1 +1 @@
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global Tether */\n\nimport Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): tooltip.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Tooltip = (($) => {\n\n  /**\n   * Check for Tether dependency\n   * Tether - http://tether.io/\n   */\n  if (window.Tether === undefined) {\n    throw new Error('Bootstrap tooltips require Tether (http://tether.io/)')\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'tooltip'\n  const VERSION             = '4.0.0-alpha.4'\n  const DATA_KEY            = 'bs.tooltip'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 150\n  const CLASS_PREFIX        = 'bs-tether'\n\n  const Default = {\n    animation   : true,\n    template    : '<div class=\"tooltip\" role=\"tooltip\">'\n                + '<div class=\"tooltip-inner\"></div></div>',\n    trigger     : 'hover focus',\n    title       : '',\n    delay       : 0,\n    html        : false,\n    selector    : false,\n    placement   : 'top',\n    offset      : '0 0',\n    constraints : []\n  }\n\n  const DefaultType = {\n    animation   : 'boolean',\n    template    : 'string',\n    title       : '(string|element|function)',\n    trigger     : 'string',\n    delay       : '(number|object)',\n    html        : 'boolean',\n    selector    : '(string|boolean)',\n    placement   : '(string|function)',\n    offset      : 'string',\n    constraints : 'array'\n  }\n\n  const AttachmentMap = {\n    TOP    : 'bottom center',\n    RIGHT  : 'middle left',\n    BOTTOM : 'top center',\n    LEFT   : 'middle right'\n  }\n\n  const HoverState = {\n    IN  : 'in',\n    OUT : 'out'\n  }\n\n  const Event = {\n    HIDE       : `hide${EVENT_KEY}`,\n    HIDDEN     : `hidden${EVENT_KEY}`,\n    SHOW       : `show${EVENT_KEY}`,\n    SHOWN      : `shown${EVENT_KEY}`,\n    INSERTED   : `inserted${EVENT_KEY}`,\n    CLICK      : `click${EVENT_KEY}`,\n    FOCUSIN    : `focusin${EVENT_KEY}`,\n    FOCUSOUT   : `focusout${EVENT_KEY}`,\n    MOUSEENTER : `mouseenter${EVENT_KEY}`,\n    MOUSELEAVE : `mouseleave${EVENT_KEY}`\n  }\n\n  const ClassName = {\n    FADE : 'fade',\n    IN   : 'in'\n  }\n\n  const Selector = {\n    TOOLTIP       : '.tooltip',\n    TOOLTIP_INNER : '.tooltip-inner'\n  }\n\n  const TetherClass = {\n    element : false,\n    enabled : false\n  }\n\n  const Trigger = {\n    HOVER  : 'hover',\n    FOCUS  : 'focus',\n    CLICK  : 'click',\n    MANUAL : 'manual'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Tooltip {\n\n    constructor(element, config) {\n\n      // private\n      this._isEnabled      = true\n      this._timeout        = 0\n      this._hoverState     = ''\n      this._activeTrigger  = {}\n      this._tether         = null\n\n      // protected\n      this.element = element\n      this.config  = this._getConfig(config)\n      this.tip     = null\n\n      this._setListeners()\n\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n    static get NAME() {\n      return NAME\n    }\n\n    static get DATA_KEY() {\n      return DATA_KEY\n    }\n\n    static get Event() {\n      return Event\n    }\n\n    static get EVENT_KEY() {\n      return EVENT_KEY\n    }\n\n    static get DefaultType() {\n      return DefaultType\n    }\n\n\n    // public\n\n    enable() {\n      this._isEnabled = true\n    }\n\n    disable() {\n      this._isEnabled = false\n    }\n\n    toggleEnabled() {\n      this._isEnabled = !this._isEnabled\n    }\n\n    toggle(event) {\n      if (event) {\n        let dataKey = this.constructor.DATA_KEY\n        let context = $(event.currentTarget).data(dataKey)\n\n        if (!context) {\n          context = new this.constructor(\n            event.currentTarget,\n            this._getDelegateConfig()\n          )\n          $(event.currentTarget).data(dataKey, context)\n        }\n\n        context._activeTrigger.click = !context._activeTrigger.click\n\n        if (context._isWithActiveTrigger()) {\n          context._enter(null, context)\n        } else {\n          context._leave(null, context)\n        }\n\n      } else {\n\n        if ($(this.getTipElement()).hasClass(ClassName.IN)) {\n          this._leave(null, this)\n          return\n        }\n\n        this._enter(null, this)\n      }\n    }\n\n    dispose() {\n      clearTimeout(this._timeout)\n\n      this.cleanupTether()\n\n      $.removeData(this.element, this.constructor.DATA_KEY)\n\n      $(this.element).off(this.constructor.EVENT_KEY)\n\n      if (this.tip) {\n        $(this.tip).remove()\n      }\n\n      this._isEnabled      = null\n      this._timeout        = null\n      this._hoverState     = null\n      this._activeTrigger  = null\n      this._tether         = null\n\n      this.element = null\n      this.config  = null\n      this.tip     = null\n    }\n\n    show() {\n      let showEvent = $.Event(this.constructor.Event.SHOW)\n\n      if (this.isWithContent() && this._isEnabled) {\n        $(this.element).trigger(showEvent)\n\n        let isInTheDom = $.contains(\n          this.element.ownerDocument.documentElement,\n          this.element\n        )\n\n        if (showEvent.isDefaultPrevented() || !isInTheDom) {\n          return\n        }\n\n        let tip   = this.getTipElement()\n        let tipId = Util.getUID(this.constructor.NAME)\n\n        tip.setAttribute('id', tipId)\n        this.element.setAttribute('aria-describedby', tipId)\n\n        this.setContent()\n\n        if (this.config.animation) {\n          $(tip).addClass(ClassName.FADE)\n        }\n\n        let placement  = typeof this.config.placement === 'function' ?\n          this.config.placement.call(this, tip, this.element) :\n          this.config.placement\n\n        let attachment = this._getAttachment(placement)\n\n        $(tip)\n          .data(this.constructor.DATA_KEY, this)\n          .appendTo(document.body)\n\n        $(this.element).trigger(this.constructor.Event.INSERTED)\n\n        this._tether = new Tether({\n          attachment,\n          element         : tip,\n          target          : this.element,\n          classes         : TetherClass,\n          classPrefix     : CLASS_PREFIX,\n          offset          : this.config.offset,\n          constraints     : this.config.constraints,\n          addTargetClasses: false\n        })\n\n        Util.reflow(tip)\n        this._tether.position()\n\n        $(tip).addClass(ClassName.IN)\n\n        let complete = () => {\n          let prevHoverState = this._hoverState\n          this._hoverState   = null\n\n          $(this.element).trigger(this.constructor.Event.SHOWN)\n\n          if (prevHoverState === HoverState.OUT) {\n            this._leave(null, this)\n          }\n        }\n\n        if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {\n          $(this.tip)\n            .one(Util.TRANSITION_END, complete)\n            .emulateTransitionEnd(Tooltip._TRANSITION_DURATION)\n          return\n        }\n\n        complete()\n      }\n    }\n\n    hide(callback) {\n      let tip       = this.getTipElement()\n      let hideEvent = $.Event(this.constructor.Event.HIDE)\n      let complete  = () => {\n        if (this._hoverState !== HoverState.IN && tip.parentNode) {\n          tip.parentNode.removeChild(tip)\n        }\n\n        this.element.removeAttribute('aria-describedby')\n        $(this.element).trigger(this.constructor.Event.HIDDEN)\n        this.cleanupTether()\n\n        if (callback) {\n          callback()\n        }\n      }\n\n      $(this.element).trigger(hideEvent)\n\n      if (hideEvent.isDefaultPrevented()) {\n        return\n      }\n\n      $(tip).removeClass(ClassName.IN)\n\n      if (Util.supportsTransitionEnd() &&\n         ($(this.tip).hasClass(ClassName.FADE))) {\n\n        $(tip)\n          .one(Util.TRANSITION_END, complete)\n          .emulateTransitionEnd(TRANSITION_DURATION)\n\n      } else {\n        complete()\n      }\n\n      this._hoverState = ''\n    }\n\n\n    // protected\n\n    isWithContent() {\n      return Boolean(this.getTitle())\n    }\n\n    getTipElement() {\n      return (this.tip = this.tip || $(this.config.template)[0])\n    }\n\n    setContent() {\n      let $tip = $(this.getTipElement())\n\n      this.setElementContent($tip.find(Selector.TOOLTIP_INNER), this.getTitle())\n\n      $tip\n        .removeClass(ClassName.FADE)\n        .removeClass(ClassName.IN)\n\n      this.cleanupTether()\n    }\n\n    setElementContent($element, content) {\n      let html = this.config.html\n      if (typeof content === 'object' && (content.nodeType || content.jquery)) {\n        // content is a DOM node or a jQuery\n        if (html) {\n          if (!$(content).parent().is($element)) {\n            $element.empty().append(content)\n          }\n        } else {\n          $element.text($(content).text())\n        }\n      } else {\n        $element[html ? 'html' : 'text'](content)\n      }\n    }\n\n    getTitle() {\n      let title = this.element.getAttribute('data-original-title')\n\n      if (!title) {\n        title = typeof this.config.title === 'function' ?\n          this.config.title.call(this.element) :\n          this.config.title\n      }\n\n      return title\n    }\n\n    cleanupTether() {\n      if (this._tether) {\n        this._tether.destroy()\n      }\n    }\n\n\n    // private\n\n    _getAttachment(placement) {\n      return AttachmentMap[placement.toUpperCase()]\n    }\n\n    _setListeners() {\n      let triggers = this.config.trigger.split(' ')\n\n      triggers.forEach((trigger) => {\n        if (trigger === 'click') {\n          $(this.element).on(\n            this.constructor.Event.CLICK,\n            this.config.selector,\n            $.proxy(this.toggle, this)\n          )\n\n        } else if (trigger !== Trigger.MANUAL) {\n          let eventIn  = trigger === Trigger.HOVER ?\n            this.constructor.Event.MOUSEENTER :\n            this.constructor.Event.FOCUSIN\n          let eventOut = trigger === Trigger.HOVER ?\n            this.constructor.Event.MOUSELEAVE :\n            this.constructor.Event.FOCUSOUT\n\n          $(this.element)\n            .on(\n              eventIn,\n              this.config.selector,\n              $.proxy(this._enter, this)\n            )\n            .on(\n              eventOut,\n              this.config.selector,\n              $.proxy(this._leave, this)\n            )\n        }\n      })\n\n      if (this.config.selector) {\n        this.config = $.extend({}, this.config, {\n          trigger  : 'manual',\n          selector : ''\n        })\n      } else {\n        this._fixTitle()\n      }\n    }\n\n    _fixTitle() {\n      let titleType = typeof this.element.getAttribute('data-original-title')\n      if (this.element.getAttribute('title') ||\n         (titleType !== 'string')) {\n        this.element.setAttribute(\n          'data-original-title',\n          this.element.getAttribute('title') || ''\n        )\n        this.element.setAttribute('title', '')\n      }\n    }\n\n    _enter(event, context) {\n      let dataKey = this.constructor.DATA_KEY\n\n      context = context || $(event.currentTarget).data(dataKey)\n\n      if (!context) {\n        context = new this.constructor(\n          event.currentTarget,\n          this._getDelegateConfig()\n        )\n        $(event.currentTarget).data(dataKey, context)\n      }\n\n      if (event) {\n        context._activeTrigger[\n          event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER\n        ] = true\n      }\n\n      if ($(context.getTipElement()).hasClass(ClassName.IN) ||\n         (context._hoverState === HoverState.IN)) {\n        context._hoverState = HoverState.IN\n        return\n      }\n\n      clearTimeout(context._timeout)\n\n      context._hoverState = HoverState.IN\n\n      if (!context.config.delay || !context.config.delay.show) {\n        context.show()\n        return\n      }\n\n      context._timeout = setTimeout(() => {\n        if (context._hoverState === HoverState.IN) {\n          context.show()\n        }\n      }, context.config.delay.show)\n    }\n\n    _leave(event, context) {\n      let dataKey = this.constructor.DATA_KEY\n\n      context = context || $(event.currentTarget).data(dataKey)\n\n      if (!context) {\n        context = new this.constructor(\n          event.currentTarget,\n          this._getDelegateConfig()\n        )\n        $(event.currentTarget).data(dataKey, context)\n      }\n\n      if (event) {\n        context._activeTrigger[\n          event.type === 'focusout' ? Trigger.FOCUS : Trigger.HOVER\n        ] = false\n      }\n\n      if (context._isWithActiveTrigger()) {\n        return\n      }\n\n      clearTimeout(context._timeout)\n\n      context._hoverState = HoverState.OUT\n\n      if (!context.config.delay || !context.config.delay.hide) {\n        context.hide()\n        return\n      }\n\n      context._timeout = setTimeout(() => {\n        if (context._hoverState === HoverState.OUT) {\n          context.hide()\n        }\n      }, context.config.delay.hide)\n    }\n\n    _isWithActiveTrigger() {\n      for (let trigger in this._activeTrigger) {\n        if (this._activeTrigger[trigger]) {\n          return true\n        }\n      }\n\n      return false\n    }\n\n    _getConfig(config) {\n      config = $.extend(\n        {},\n        this.constructor.Default,\n        $(this.element).data(),\n        config\n      )\n\n      if (config.delay && typeof config.delay === 'number') {\n        config.delay = {\n          show : config.delay,\n          hide : config.delay\n        }\n      }\n\n      Util.typeCheckConfig(\n        NAME,\n        config,\n        this.constructor.DefaultType\n      )\n\n      return config\n    }\n\n    _getDelegateConfig() {\n      let config = {}\n\n      if (this.config) {\n        for (let key in this.config) {\n          if (this.constructor.Default[key] !== this.config[key]) {\n            config[key] = this.config[key]\n          }\n        }\n      }\n\n      return config\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data   = $(this).data(DATA_KEY)\n        let _config = typeof config === 'object' ?\n          config : null\n\n        if (!data && /destroy|hide/.test(config)) {\n          return\n        }\n\n        if (!data) {\n          data = new Tooltip(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Tooltip._jQueryInterface\n  $.fn[NAME].Constructor = Tooltip\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Tooltip._jQueryInterface\n  }\n\n  return Tooltip\n\n})(jQuery)\n\nexport default Tooltip\n"]}
\ No newline at end of file
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global Tether */\n\nimport Util from './util'\n\n\n/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): tooltip.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Tooltip = (($) => {\n\n  /**\n   * Check for Tether dependency\n   * Tether - http://tether.io/\n   */\n  if (typeof Tether === 'undefined') {\n    throw new Error('Bootstrap tooltips require Tether (http://tether.io/)')\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Constants\n   * ------------------------------------------------------------------------\n   */\n\n  const NAME                = 'tooltip'\n  const VERSION             = '4.0.0-alpha.5'\n  const DATA_KEY            = 'bs.tooltip'\n  const EVENT_KEY           = `.${DATA_KEY}`\n  const JQUERY_NO_CONFLICT  = $.fn[NAME]\n  const TRANSITION_DURATION = 150\n  const CLASS_PREFIX        = 'bs-tether'\n\n  const Default = {\n    animation   : true,\n    template    : '<div class=\"tooltip\" role=\"tooltip\">'\n                + '<div class=\"tooltip-inner\"></div></div>',\n    trigger     : 'hover focus',\n    title       : '',\n    delay       : 0,\n    html        : false,\n    selector    : false,\n    placement   : 'top',\n    offset      : '0 0',\n    constraints : [],\n    container   : false\n  }\n\n  const DefaultType = {\n    animation   : 'boolean',\n    template    : 'string',\n    title       : '(string|element|function)',\n    trigger     : 'string',\n    delay       : '(number|object)',\n    html        : 'boolean',\n    selector    : '(string|boolean)',\n    placement   : '(string|function)',\n    offset      : 'string',\n    constraints : 'array',\n    container   : '(string|element|boolean)'\n  }\n\n  const AttachmentMap = {\n    TOP    : 'bottom center',\n    RIGHT  : 'middle left',\n    BOTTOM : 'top center',\n    LEFT   : 'middle right'\n  }\n\n  const HoverState = {\n    SHOW : 'show',\n    OUT  : 'out'\n  }\n\n  const Event = {\n    HIDE       : `hide${EVENT_KEY}`,\n    HIDDEN     : `hidden${EVENT_KEY}`,\n    SHOW       : `show${EVENT_KEY}`,\n    SHOWN      : `shown${EVENT_KEY}`,\n    INSERTED   : `inserted${EVENT_KEY}`,\n    CLICK      : `click${EVENT_KEY}`,\n    FOCUSIN    : `focusin${EVENT_KEY}`,\n    FOCUSOUT   : `focusout${EVENT_KEY}`,\n    MOUSEENTER : `mouseenter${EVENT_KEY}`,\n    MOUSELEAVE : `mouseleave${EVENT_KEY}`\n  }\n\n  const ClassName = {\n    FADE : 'fade',\n    SHOW : 'show'\n  }\n\n  const Selector = {\n    TOOLTIP       : '.tooltip',\n    TOOLTIP_INNER : '.tooltip-inner'\n  }\n\n  const TetherClass = {\n    element : false,\n    enabled : false\n  }\n\n  const Trigger = {\n    HOVER  : 'hover',\n    FOCUS  : 'focus',\n    CLICK  : 'click',\n    MANUAL : 'manual'\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Class Definition\n   * ------------------------------------------------------------------------\n   */\n\n  class Tooltip {\n\n    constructor(element, config) {\n\n      // private\n      this._isEnabled        = true\n      this._timeout          = 0\n      this._hoverState       = ''\n      this._activeTrigger    = {}\n      this._isTransitioning  = false\n      this._tether           = null\n\n      // protected\n      this.element = element\n      this.config  = this._getConfig(config)\n      this.tip     = null\n\n      this._setListeners()\n\n    }\n\n\n    // getters\n\n    static get VERSION() {\n      return VERSION\n    }\n\n    static get Default() {\n      return Default\n    }\n\n    static get NAME() {\n      return NAME\n    }\n\n    static get DATA_KEY() {\n      return DATA_KEY\n    }\n\n    static get Event() {\n      return Event\n    }\n\n    static get EVENT_KEY() {\n      return EVENT_KEY\n    }\n\n    static get DefaultType() {\n      return DefaultType\n    }\n\n\n    // public\n\n    enable() {\n      this._isEnabled = true\n    }\n\n    disable() {\n      this._isEnabled = false\n    }\n\n    toggleEnabled() {\n      this._isEnabled = !this._isEnabled\n    }\n\n    toggle(event) {\n      if (event) {\n        const dataKey = this.constructor.DATA_KEY\n        let context = $(event.currentTarget).data(dataKey)\n\n        if (!context) {\n          context = new this.constructor(\n            event.currentTarget,\n            this._getDelegateConfig()\n          )\n          $(event.currentTarget).data(dataKey, context)\n        }\n\n        context._activeTrigger.click = !context._activeTrigger.click\n\n        if (context._isWithActiveTrigger()) {\n          context._enter(null, context)\n        } else {\n          context._leave(null, context)\n        }\n\n      } else {\n\n        if ($(this.getTipElement()).hasClass(ClassName.SHOW)) {\n          this._leave(null, this)\n          return\n        }\n\n        this._enter(null, this)\n      }\n    }\n\n    dispose() {\n      clearTimeout(this._timeout)\n\n      this.cleanupTether()\n\n      $.removeData(this.element, this.constructor.DATA_KEY)\n\n      $(this.element).off(this.constructor.EVENT_KEY)\n      $(this.element).closest('.modal').off('hide.bs.modal')\n\n      if (this.tip) {\n        $(this.tip).remove()\n      }\n\n      this._isEnabled     = null\n      this._timeout       = null\n      this._hoverState    = null\n      this._activeTrigger = null\n      this._tether        = null\n\n      this.element = null\n      this.config  = null\n      this.tip     = null\n    }\n\n    show() {\n      if ($(this.element).css('display') === 'none') {\n        throw new Error('Please use show on visible elements')\n      }\n\n      const showEvent = $.Event(this.constructor.Event.SHOW)\n      if (this.isWithContent() && this._isEnabled) {\n        if (this._isTransitioning) {\n          throw new Error('Tooltip is transitioning')\n        }\n        $(this.element).trigger(showEvent)\n\n        const isInTheDom = $.contains(\n          this.element.ownerDocument.documentElement,\n          this.element\n        )\n\n        if (showEvent.isDefaultPrevented() || !isInTheDom) {\n          return\n        }\n\n        const tip   = this.getTipElement()\n        const tipId = Util.getUID(this.constructor.NAME)\n\n        tip.setAttribute('id', tipId)\n        this.element.setAttribute('aria-describedby', tipId)\n\n        this.setContent()\n\n        if (this.config.animation) {\n          $(tip).addClass(ClassName.FADE)\n        }\n\n        const placement  = typeof this.config.placement === 'function' ?\n          this.config.placement.call(this, tip, this.element) :\n          this.config.placement\n\n        const attachment = this._getAttachment(placement)\n\n        const container = this.config.container === false ? document.body : $(this.config.container)\n\n        $(tip)\n          .data(this.constructor.DATA_KEY, this)\n          .appendTo(container)\n\n        $(this.element).trigger(this.constructor.Event.INSERTED)\n\n        this._tether = new Tether({\n          attachment,\n          element         : tip,\n          target          : this.element,\n          classes         : TetherClass,\n          classPrefix     : CLASS_PREFIX,\n          offset          : this.config.offset,\n          constraints     : this.config.constraints,\n          addTargetClasses: false\n        })\n\n        Util.reflow(tip)\n        this._tether.position()\n\n        $(tip).addClass(ClassName.SHOW)\n\n        const complete = () => {\n          const prevHoverState = this._hoverState\n          this._hoverState   = null\n          this._isTransitioning = false\n\n          $(this.element).trigger(this.constructor.Event.SHOWN)\n\n          if (prevHoverState === HoverState.OUT) {\n            this._leave(null, this)\n          }\n        }\n\n        if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {\n          this._isTransitioning = true\n          $(this.tip)\n            .one(Util.TRANSITION_END, complete)\n            .emulateTransitionEnd(Tooltip._TRANSITION_DURATION)\n          return\n        }\n\n        complete()\n      }\n    }\n\n    hide(callback) {\n      const tip       = this.getTipElement()\n      const hideEvent = $.Event(this.constructor.Event.HIDE)\n      if (this._isTransitioning) {\n        throw new Error('Tooltip is transitioning')\n      }\n      const complete  = () => {\n        if (this._hoverState !== HoverState.SHOW && tip.parentNode) {\n          tip.parentNode.removeChild(tip)\n        }\n\n        this.element.removeAttribute('aria-describedby')\n        $(this.element).trigger(this.constructor.Event.HIDDEN)\n        this._isTransitioning = false\n        this.cleanupTether()\n\n        if (callback) {\n          callback()\n        }\n      }\n\n      $(this.element).trigger(hideEvent)\n\n      if (hideEvent.isDefaultPrevented()) {\n        return\n      }\n\n      $(tip).removeClass(ClassName.SHOW)\n\n      this._activeTrigger[Trigger.CLICK] = false\n      this._activeTrigger[Trigger.FOCUS] = false\n      this._activeTrigger[Trigger.HOVER] = false\n\n      if (Util.supportsTransitionEnd() &&\n          $(this.tip).hasClass(ClassName.FADE)) {\n        this._isTransitioning = true\n        $(tip)\n          .one(Util.TRANSITION_END, complete)\n          .emulateTransitionEnd(TRANSITION_DURATION)\n\n      } else {\n        complete()\n      }\n\n      this._hoverState = ''\n    }\n\n\n    // protected\n\n    isWithContent() {\n      return Boolean(this.getTitle())\n    }\n\n    getTipElement() {\n      return this.tip = this.tip || $(this.config.template)[0]\n    }\n\n    setContent() {\n      const $tip = $(this.getTipElement())\n\n      this.setElementContent($tip.find(Selector.TOOLTIP_INNER), this.getTitle())\n\n      $tip.removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)\n\n      this.cleanupTether()\n    }\n\n    setElementContent($element, content) {\n      const html = this.config.html\n      if (typeof content === 'object' && (content.nodeType || content.jquery)) {\n        // content is a DOM node or a jQuery\n        if (html) {\n          if (!$(content).parent().is($element)) {\n            $element.empty().append(content)\n          }\n        } else {\n          $element.text($(content).text())\n        }\n      } else {\n        $element[html ? 'html' : 'text'](content)\n      }\n    }\n\n    getTitle() {\n      let title = this.element.getAttribute('data-original-title')\n\n      if (!title) {\n        title = typeof this.config.title === 'function' ?\n          this.config.title.call(this.element) :\n          this.config.title\n      }\n\n      return title\n    }\n\n    cleanupTether() {\n      if (this._tether) {\n        this._tether.destroy()\n      }\n    }\n\n\n    // private\n\n    _getAttachment(placement) {\n      return AttachmentMap[placement.toUpperCase()]\n    }\n\n    _setListeners() {\n      const triggers = this.config.trigger.split(' ')\n\n      triggers.forEach((trigger) => {\n        if (trigger === 'click') {\n          $(this.element).on(\n            this.constructor.Event.CLICK,\n            this.config.selector,\n            (event) => this.toggle(event)\n          )\n\n        } else if (trigger !== Trigger.MANUAL) {\n          const eventIn  = trigger === Trigger.HOVER ?\n            this.constructor.Event.MOUSEENTER :\n            this.constructor.Event.FOCUSIN\n          const eventOut = trigger === Trigger.HOVER ?\n            this.constructor.Event.MOUSELEAVE :\n            this.constructor.Event.FOCUSOUT\n\n          $(this.element)\n            .on(\n              eventIn,\n              this.config.selector,\n              (event) => this._enter(event)\n            )\n            .on(\n              eventOut,\n              this.config.selector,\n              (event) => this._leave(event)\n            )\n        }\n\n        $(this.element).closest('.modal').on(\n          'hide.bs.modal',\n          () => this.hide()\n        )\n      })\n\n      if (this.config.selector) {\n        this.config = $.extend({}, this.config, {\n          trigger  : 'manual',\n          selector : ''\n        })\n      } else {\n        this._fixTitle()\n      }\n    }\n\n    _fixTitle() {\n      const titleType = typeof this.element.getAttribute('data-original-title')\n      if (this.element.getAttribute('title') ||\n         titleType !== 'string') {\n        this.element.setAttribute(\n          'data-original-title',\n          this.element.getAttribute('title') || ''\n        )\n        this.element.setAttribute('title', '')\n      }\n    }\n\n    _enter(event, context) {\n      const dataKey = this.constructor.DATA_KEY\n\n      context = context || $(event.currentTarget).data(dataKey)\n\n      if (!context) {\n        context = new this.constructor(\n          event.currentTarget,\n          this._getDelegateConfig()\n        )\n        $(event.currentTarget).data(dataKey, context)\n      }\n\n      if (event) {\n        context._activeTrigger[\n          event.type === 'focusin' ? Trigger.FOCUS : Trigger.HOVER\n        ] = true\n      }\n\n      if ($(context.getTipElement()).hasClass(ClassName.SHOW) ||\n         context._hoverState === HoverState.SHOW) {\n        context._hoverState = HoverState.SHOW\n        return\n      }\n\n      clearTimeout(context._timeout)\n\n      context._hoverState = HoverState.SHOW\n\n      if (!context.config.delay || !context.config.delay.show) {\n        context.show()\n        return\n      }\n\n      context._timeout = setTimeout(() => {\n        if (context._hoverState === HoverState.SHOW) {\n          context.show()\n        }\n      }, context.config.delay.show)\n    }\n\n    _leave(event, context) {\n      const dataKey = this.constructor.DATA_KEY\n\n      context = context || $(event.currentTarget).data(dataKey)\n\n      if (!context) {\n        context = new this.constructor(\n          event.currentTarget,\n          this._getDelegateConfig()\n        )\n        $(event.currentTarget).data(dataKey, context)\n      }\n\n      if (event) {\n        context._activeTrigger[\n          event.type === 'focusout' ? Trigger.FOCUS : Trigger.HOVER\n        ] = false\n      }\n\n      if (context._isWithActiveTrigger()) {\n        return\n      }\n\n      clearTimeout(context._timeout)\n\n      context._hoverState = HoverState.OUT\n\n      if (!context.config.delay || !context.config.delay.hide) {\n        context.hide()\n        return\n      }\n\n      context._timeout = setTimeout(() => {\n        if (context._hoverState === HoverState.OUT) {\n          context.hide()\n        }\n      }, context.config.delay.hide)\n    }\n\n    _isWithActiveTrigger() {\n      for (const trigger in this._activeTrigger) {\n        if (this._activeTrigger[trigger]) {\n          return true\n        }\n      }\n\n      return false\n    }\n\n    _getConfig(config) {\n      config = $.extend(\n        {},\n        this.constructor.Default,\n        $(this.element).data(),\n        config\n      )\n\n      if (config.delay && typeof config.delay === 'number') {\n        config.delay = {\n          show : config.delay,\n          hide : config.delay\n        }\n      }\n\n      Util.typeCheckConfig(\n        NAME,\n        config,\n        this.constructor.DefaultType\n      )\n\n      return config\n    }\n\n    _getDelegateConfig() {\n      const config = {}\n\n      if (this.config) {\n        for (const key in this.config) {\n          if (this.constructor.Default[key] !== this.config[key]) {\n            config[key] = this.config[key]\n          }\n        }\n      }\n\n      return config\n    }\n\n\n    // static\n\n    static _jQueryInterface(config) {\n      return this.each(function () {\n        let data      = $(this).data(DATA_KEY)\n        const _config = typeof config === 'object' && config\n\n        if (!data && /dispose|hide/.test(config)) {\n          return\n        }\n\n        if (!data) {\n          data = new Tooltip(this, _config)\n          $(this).data(DATA_KEY, data)\n        }\n\n        if (typeof config === 'string') {\n          if (data[config] === undefined) {\n            throw new Error(`No method named \"${config}\"`)\n          }\n          data[config]()\n        }\n      })\n    }\n\n  }\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * jQuery\n   * ------------------------------------------------------------------------\n   */\n\n  $.fn[NAME]             = Tooltip._jQueryInterface\n  $.fn[NAME].Constructor = Tooltip\n  $.fn[NAME].noConflict  = function () {\n    $.fn[NAME] = JQUERY_NO_CONFLICT\n    return Tooltip._jQueryInterface\n  }\n\n  return Tooltip\n\n})(jQuery)\n\nexport default Tooltip\n"]}
\ No newline at end of file
diff --git a/js/dist/util.js b/js/dist/util.js
index 366817061..d53ea9220 100644
--- a/js/dist/util.js
+++ b/js/dist/util.js
@@ -1,6 +1,6 @@
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): util.js
+ * Bootstrap (v4.0.0-alpha.5): util.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -55,7 +55,9 @@ var Util = function ($) {
 
     for (var name in TransitionEndEvent) {
       if (el.style[name] !== undefined) {
-        return { end: TransitionEndEvent[name] };
+        return {
+          end: TransitionEndEvent[name]
+        };
       }
     }
 
@@ -102,9 +104,8 @@ var Util = function ($) {
 
     getUID: function getUID(prefix) {
       do {
-        /* eslint-disable no-bitwise */
+        // eslint-disable-next-line no-bitwise
         prefix += ~~(Math.random() * MAX_UID); // "~~" acts like a faster Math.floor() here
-        /* eslint-enable no-bitwise */
       } while (document.getElementById(prefix));
       return prefix;
     },
@@ -119,7 +120,7 @@ var Util = function ($) {
       return selector;
     },
     reflow: function reflow(element) {
-      new Function('bs', 'return bs')(element.offsetHeight);
+      return element.offsetHeight;
     },
     triggerTransitionEnd: function triggerTransitionEnd(element) {
       $(element).trigger(transition.end);
@@ -132,13 +133,7 @@ var Util = function ($) {
         if (configTypes.hasOwnProperty(property)) {
           var expectedTypes = configTypes[property];
           var value = config[property];
-          var valueType = void 0;
-
-          if (value && isElement(value)) {
-            valueType = 'element';
-          } else {
-            valueType = toType(value);
-          }
+          var valueType = value && isElement(value) ? 'element' : toType(value);
 
           if (!new RegExp(expectedTypes).test(valueType)) {
             throw new Error(componentName.toUpperCase() + ': ' + ('Option "' + property + '" provided type "' + valueType + '" ') + ('but expected type "' + expectedTypes + '".'));
diff --git a/js/dist/util.js.map b/js/dist/util.js.map
index 2a23338d9..85f90e8ea 100644
--- a/js/dist/util.js.map
+++ b/js/dist/util.js.map
@@ -1 +1 @@
-{"version":3,"sources":["../src/util.js"],"names":["Util","$","transition","MAX_UID","TransitionEndEvent","WebkitTransition","MozTransition","OTransition","toType","obj","toString","call","match","toLowerCase","isElement","nodeType","getSpecialTransitionEndEvent","bindType","end","delegateType","handle","event","target","is","handleObj","handler","apply","arguments","undefined","transitionEndTest","window","QUnit","el","document","createElement","name","style","transitionEndEmulator","duration","called","one","TRANSITION_END","setTimeout","triggerTransitionEnd","setTransitionEndSupport","fn","emulateTransitionEnd","supportsTransitionEnd","special","getUID","prefix","Math","random","getElementById","getSelectorFromElement","element","selector","getAttribute","test","reflow","Function","offsetHeight","trigger","Boolean","typeCheckConfig","componentName","config","configTypes","property","hasOwnProperty","expectedTypes","value","valueType","RegExp","Error","toUpperCase","jQuery"],"mappings":"AAAA;;;;;;;AAOA,IAAMA,OAAQ,UAACC,CAAD,EAAO;;AAGnB;;;;;;AAMA,MAAIC,aAAa,KAAjB;;AAEA,MAAMC,UAAU,OAAhB;;AAEA,MAAMC,qBAAqB;AACzBC,sBAAmB,qBADM;AAEzBC,mBAAmB,eAFM;AAGzBC,iBAAmB,+BAHM;AAIzBL,gBAAmB;AAJM,GAA3B;;AAOA;AACA,WAASM,MAAT,CAAgBC,GAAhB,EAAqB;AACnB,WAAQ,EAAD,CAAKC,QAAL,CAAcC,IAAd,CAAmBF,GAAnB,EAAwBG,KAAxB,CAA8B,eAA9B,EAA+C,CAA/C,EAAkDC,WAAlD,EAAP;AACD;;AAED,WAASC,SAAT,CAAmBL,GAAnB,EAAwB;AACtB,WAAO,CAACA,IAAI,CAAJ,KAAUA,GAAX,EAAgBM,QAAvB;AACD;;AAED,WAASC,4BAAT,GAAwC;AACtC,WAAO;AACLC,gBAAUf,WAAWgB,GADhB;AAELC,oBAAcjB,WAAWgB,GAFpB;AAGLE,YAHK,kBAGEC,KAHF,EAGS;AACZ,YAAIpB,EAAEoB,MAAMC,MAAR,EAAgBC,EAAhB,CAAmB,IAAnB,CAAJ,EAA8B;AAC5B,iBAAOF,MAAMG,SAAN,CAAgBC,OAAhB,CAAwBC,KAAxB,CAA8B,IAA9B,EAAoCC,SAApC,CAAP,CAD4B,CAC0B;AACvD;AACD,eAAOC,SAAP;AACD;AARI,KAAP;AAUD;;AAED,WAASC,iBAAT,GAA6B;AAC3B,QAAIC,OAAOC,KAAX,EAAkB;AAChB,aAAO,KAAP;AACD;;AAED,QAAIC,KAAKC,SAASC,aAAT,CAAuB,WAAvB,CAAT;;AAEA,SAAK,IAAIC,IAAT,IAAiB/B,kBAAjB,EAAqC;AACnC,UAAI4B,GAAGI,KAAH,CAASD,IAAT,MAAmBP,SAAvB,EAAkC;AAChC,eAAO,EAAEV,KAAKd,mBAAmB+B,IAAnB,CAAP,EAAP;AACD;AACF;;AAED,WAAO,KAAP;AACD;;AAED,WAASE,qBAAT,CAA+BC,QAA/B,EAAyC;AAAA;;AACvC,QAAIC,SAAS,KAAb;;AAEAtC,MAAE,IAAF,EAAQuC,GAAR,CAAYxC,KAAKyC,cAAjB,EAAiC,YAAM;AACrCF,eAAS,IAAT;AACD,KAFD;;AAIAG,eAAW,YAAM;AACf,UAAI,CAACH,MAAL,EAAa;AACXvC,aAAK2C,oBAAL;AACD;AACF,KAJD,EAIGL,QAJH;;AAMA,WAAO,IAAP;AACD;;AAED,WAASM,uBAAT,GAAmC;AACjC1C,iBAAa2B,mBAAb;;AAEA5B,MAAE4C,EAAF,CAAKC,oBAAL,GAA4BT,qBAA5B;;AAEA,QAAIrC,KAAK+C,qBAAL,EAAJ,EAAkC;AAChC9C,QAAEoB,KAAF,CAAQ2B,OAAR,CAAgBhD,KAAKyC,cAArB,IAAuCzB,8BAAvC;AACD;AACF;;AAGD;;;;;;AAMA,MAAIhB,OAAO;;AAETyC,oBAAgB,iBAFP;;AAITQ,UAJS,kBAIFC,MAJE,EAIM;AACb,SAAG;AACD;AACAA,kBAAU,CAAC,EAAEC,KAAKC,MAAL,KAAgBjD,OAAlB,CAAX,CAFC,CAEqC;AACtC;AACD,OAJD,QAIS8B,SAASoB,cAAT,CAAwBH,MAAxB,CAJT;AAKA,aAAOA,MAAP;AACD,KAXQ;AAaTI,0BAbS,kCAacC,OAbd,EAauB;AAC9B,UAAIC,WAAWD,QAAQE,YAAR,CAAqB,aAArB,CAAf;;AAEA,UAAI,CAACD,QAAL,EAAe;AACbA,mBAAWD,QAAQE,YAAR,CAAqB,MAArB,KAAgC,EAA3C;AACAD,mBAAW,WAAWE,IAAX,CAAgBF,QAAhB,IAA4BA,QAA5B,GAAuC,IAAlD;AACD;;AAED,aAAOA,QAAP;AACD,KAtBQ;AAwBTG,UAxBS,kBAwBFJ,OAxBE,EAwBO;AACd,UAAIK,QAAJ,CAAa,IAAb,EAAmB,WAAnB,EAAgCL,QAAQM,YAAxC;AACD,KA1BQ;AA4BTlB,wBA5BS,gCA4BYY,OA5BZ,EA4BqB;AAC5BtD,QAAEsD,OAAF,EAAWO,OAAX,CAAmB5D,WAAWgB,GAA9B;AACD,KA9BQ;AAgCT6B,yBAhCS,mCAgCe;AACtB,aAAOgB,QAAQ7D,UAAR,CAAP;AACD,KAlCQ;AAoCT8D,mBApCS,2BAoCOC,aApCP,EAoCsBC,MApCtB,EAoC8BC,WApC9B,EAoC2C;AAClD,WAAK,IAAIC,QAAT,IAAqBD,WAArB,EAAkC;AAChC,YAAIA,YAAYE,cAAZ,CAA2BD,QAA3B,CAAJ,EAA0C;AACxC,cAAIE,gBAAgBH,YAAYC,QAAZ,CAApB;AACA,cAAIG,QAAgBL,OAAOE,QAAP,CAApB;AACA,cAAII,kBAAJ;;AAEA,cAAID,SAASzD,UAAUyD,KAAV,CAAb,EAA+B;AAC7BC,wBAAY,SAAZ;AACD,WAFD,MAEO;AACLA,wBAAYhE,OAAO+D,KAAP,CAAZ;AACD;;AAED,cAAI,CAAC,IAAIE,MAAJ,CAAWH,aAAX,EAA0BZ,IAA1B,CAA+Bc,SAA/B,CAAL,EAAgD;AAC9C,kBAAM,IAAIE,KAAJ,CACDT,cAAcU,WAAd,EAAH,wBACWP,QADX,yBACuCI,SADvC,oCAEsBF,aAFtB,QADI,CAAN;AAID;AACF;AACF;AACF;AAzDQ,GAAX;;AA4DA1B;;AAEA,SAAO5C,IAAP;AAED,CA3JY,CA2JV4E,MA3JU,CAAb","file":"util.js","sourcesContent":["/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.4): util.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Util = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Private TransitionEnd Helpers\n   * ------------------------------------------------------------------------\n   */\n\n  let transition = false\n\n  const MAX_UID = 1000000\n\n  const TransitionEndEvent = {\n    WebkitTransition : 'webkitTransitionEnd',\n    MozTransition    : 'transitionend',\n    OTransition      : 'oTransitionEnd otransitionend',\n    transition       : 'transitionend'\n  }\n\n  // shoutout AngusCroll (https://goo.gl/pxwQGp)\n  function toType(obj) {\n    return ({}).toString.call(obj).match(/\\s([a-zA-Z]+)/)[1].toLowerCase()\n  }\n\n  function isElement(obj) {\n    return (obj[0] || obj).nodeType\n  }\n\n  function getSpecialTransitionEndEvent() {\n    return {\n      bindType: transition.end,\n      delegateType: transition.end,\n      handle(event) {\n        if ($(event.target).is(this)) {\n          return event.handleObj.handler.apply(this, arguments) // eslint-disable-line prefer-rest-params\n        }\n        return undefined\n      }\n    }\n  }\n\n  function transitionEndTest() {\n    if (window.QUnit) {\n      return false\n    }\n\n    let el = document.createElement('bootstrap')\n\n    for (let name in TransitionEndEvent) {\n      if (el.style[name] !== undefined) {\n        return { end: TransitionEndEvent[name] }\n      }\n    }\n\n    return false\n  }\n\n  function transitionEndEmulator(duration) {\n    let called = false\n\n    $(this).one(Util.TRANSITION_END, () => {\n      called = true\n    })\n\n    setTimeout(() => {\n      if (!called) {\n        Util.triggerTransitionEnd(this)\n      }\n    }, duration)\n\n    return this\n  }\n\n  function setTransitionEndSupport() {\n    transition = transitionEndTest()\n\n    $.fn.emulateTransitionEnd = transitionEndEmulator\n\n    if (Util.supportsTransitionEnd()) {\n      $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent()\n    }\n  }\n\n\n  /**\n   * --------------------------------------------------------------------------\n   * Public Util Api\n   * --------------------------------------------------------------------------\n   */\n\n  let Util = {\n\n    TRANSITION_END: 'bsTransitionEnd',\n\n    getUID(prefix) {\n      do {\n        /* eslint-disable no-bitwise */\n        prefix += ~~(Math.random() * MAX_UID) // \"~~\" acts like a faster Math.floor() here\n        /* eslint-enable no-bitwise */\n      } while (document.getElementById(prefix))\n      return prefix\n    },\n\n    getSelectorFromElement(element) {\n      let selector = element.getAttribute('data-target')\n\n      if (!selector) {\n        selector = element.getAttribute('href') || ''\n        selector = /^#[a-z]/i.test(selector) ? selector : null\n      }\n\n      return selector\n    },\n\n    reflow(element) {\n      new Function('bs', 'return bs')(element.offsetHeight)\n    },\n\n    triggerTransitionEnd(element) {\n      $(element).trigger(transition.end)\n    },\n\n    supportsTransitionEnd() {\n      return Boolean(transition)\n    },\n\n    typeCheckConfig(componentName, config, configTypes) {\n      for (let property in configTypes) {\n        if (configTypes.hasOwnProperty(property)) {\n          let expectedTypes = configTypes[property]\n          let value         = config[property]\n          let valueType\n\n          if (value && isElement(value)) {\n            valueType = 'element'\n          } else {\n            valueType = toType(value)\n          }\n\n          if (!new RegExp(expectedTypes).test(valueType)) {\n            throw new Error(\n              `${componentName.toUpperCase()}: ` +\n              `Option \"${property}\" provided type \"${valueType}\" ` +\n              `but expected type \"${expectedTypes}\".`)\n          }\n        }\n      }\n    }\n  }\n\n  setTransitionEndSupport()\n\n  return Util\n\n})(jQuery)\n\nexport default Util\n"]}
\ No newline at end of file
+{"version":3,"sources":["../src/util.js"],"names":["Util","$","transition","MAX_UID","TransitionEndEvent","WebkitTransition","MozTransition","OTransition","toType","obj","toString","call","match","toLowerCase","isElement","nodeType","getSpecialTransitionEndEvent","bindType","end","delegateType","handle","event","target","is","handleObj","handler","apply","arguments","undefined","transitionEndTest","window","QUnit","el","document","createElement","name","style","transitionEndEmulator","duration","called","one","TRANSITION_END","setTimeout","triggerTransitionEnd","setTransitionEndSupport","fn","emulateTransitionEnd","supportsTransitionEnd","special","getUID","prefix","Math","random","getElementById","getSelectorFromElement","element","selector","getAttribute","test","reflow","offsetHeight","trigger","Boolean","typeCheckConfig","componentName","config","configTypes","property","hasOwnProperty","expectedTypes","value","valueType","RegExp","Error","toUpperCase","jQuery"],"mappings":"AAAA;;;;;;;AAOA,IAAMA,OAAQ,UAACC,CAAD,EAAO;;AAGnB;;;;;;AAMA,MAAIC,aAAa,KAAjB;;AAEA,MAAMC,UAAU,OAAhB;;AAEA,MAAMC,qBAAqB;AACzBC,sBAAmB,qBADM;AAEzBC,mBAAmB,eAFM;AAGzBC,iBAAmB,+BAHM;AAIzBL,gBAAmB;AAJM,GAA3B;;AAOA;AACA,WAASM,MAAT,CAAgBC,GAAhB,EAAqB;AACnB,WAAO,GAAGC,QAAH,CAAYC,IAAZ,CAAiBF,GAAjB,EAAsBG,KAAtB,CAA4B,eAA5B,EAA6C,CAA7C,EAAgDC,WAAhD,EAAP;AACD;;AAED,WAASC,SAAT,CAAmBL,GAAnB,EAAwB;AACtB,WAAO,CAACA,IAAI,CAAJ,KAAUA,GAAX,EAAgBM,QAAvB;AACD;;AAED,WAASC,4BAAT,GAAwC;AACtC,WAAO;AACLC,gBAAUf,WAAWgB,GADhB;AAELC,oBAAcjB,WAAWgB,GAFpB;AAGLE,YAHK,kBAGEC,KAHF,EAGS;AACZ,YAAIpB,EAAEoB,MAAMC,MAAR,EAAgBC,EAAhB,CAAmB,IAAnB,CAAJ,EAA8B;AAC5B,iBAAOF,MAAMG,SAAN,CAAgBC,OAAhB,CAAwBC,KAAxB,CAA8B,IAA9B,EAAoCC,SAApC,CAAP,CAD4B,CAC0B;AACvD;AACD,eAAOC,SAAP;AACD;AARI,KAAP;AAUD;;AAED,WAASC,iBAAT,GAA6B;AAC3B,QAAIC,OAAOC,KAAX,EAAkB;AAChB,aAAO,KAAP;AACD;;AAED,QAAMC,KAAKC,SAASC,aAAT,CAAuB,WAAvB,CAAX;;AAEA,SAAK,IAAMC,IAAX,IAAmB/B,kBAAnB,EAAuC;AACrC,UAAI4B,GAAGI,KAAH,CAASD,IAAT,MAAmBP,SAAvB,EAAkC;AAChC,eAAO;AACLV,eAAKd,mBAAmB+B,IAAnB;AADA,SAAP;AAGD;AACF;;AAED,WAAO,KAAP;AACD;;AAED,WAASE,qBAAT,CAA+BC,QAA/B,EAAyC;AAAA;;AACvC,QAAIC,SAAS,KAAb;;AAEAtC,MAAE,IAAF,EAAQuC,GAAR,CAAYxC,KAAKyC,cAAjB,EAAiC,YAAM;AACrCF,eAAS,IAAT;AACD,KAFD;;AAIAG,eAAW,YAAM;AACf,UAAI,CAACH,MAAL,EAAa;AACXvC,aAAK2C,oBAAL;AACD;AACF,KAJD,EAIGL,QAJH;;AAMA,WAAO,IAAP;AACD;;AAED,WAASM,uBAAT,GAAmC;AACjC1C,iBAAa2B,mBAAb;;AAEA5B,MAAE4C,EAAF,CAAKC,oBAAL,GAA4BT,qBAA5B;;AAEA,QAAIrC,KAAK+C,qBAAL,EAAJ,EAAkC;AAChC9C,QAAEoB,KAAF,CAAQ2B,OAAR,CAAgBhD,KAAKyC,cAArB,IAAuCzB,8BAAvC;AACD;AACF;;AAGD;;;;;;AAMA,MAAMhB,OAAO;;AAEXyC,oBAAgB,iBAFL;;AAIXQ,UAJW,kBAIJC,MAJI,EAII;AACb,SAAG;AACD;AACAA,kBAAU,CAAC,EAAEC,KAAKC,MAAL,KAAgBjD,OAAlB,CAAX,CAFC,CAEqC;AACvC,OAHD,QAGS8B,SAASoB,cAAT,CAAwBH,MAAxB,CAHT;AAIA,aAAOA,MAAP;AACD,KAVU;AAYXI,0BAZW,kCAYYC,OAZZ,EAYqB;AAC9B,UAAIC,WAAWD,QAAQE,YAAR,CAAqB,aAArB,CAAf;;AAEA,UAAI,CAACD,QAAL,EAAe;AACbA,mBAAWD,QAAQE,YAAR,CAAqB,MAArB,KAAgC,EAA3C;AACAD,mBAAW,WAAWE,IAAX,CAAgBF,QAAhB,IAA4BA,QAA5B,GAAuC,IAAlD;AACD;;AAED,aAAOA,QAAP;AACD,KArBU;AAuBXG,UAvBW,kBAuBJJ,OAvBI,EAuBK;AACd,aAAOA,QAAQK,YAAf;AACD,KAzBU;AA2BXjB,wBA3BW,gCA2BUY,OA3BV,EA2BmB;AAC5BtD,QAAEsD,OAAF,EAAWM,OAAX,CAAmB3D,WAAWgB,GAA9B;AACD,KA7BU;AA+BX6B,yBA/BW,mCA+Ba;AACtB,aAAOe,QAAQ5D,UAAR,CAAP;AACD,KAjCU;AAmCX6D,mBAnCW,2BAmCKC,aAnCL,EAmCoBC,MAnCpB,EAmC4BC,WAnC5B,EAmCyC;AAClD,WAAK,IAAMC,QAAX,IAAuBD,WAAvB,EAAoC;AAClC,YAAIA,YAAYE,cAAZ,CAA2BD,QAA3B,CAAJ,EAA0C;AACxC,cAAME,gBAAgBH,YAAYC,QAAZ,CAAtB;AACA,cAAMG,QAAgBL,OAAOE,QAAP,CAAtB;AACA,cAAMI,YAAgBD,SAASxD,UAAUwD,KAAV,CAAT,GACA,SADA,GACY9D,OAAO8D,KAAP,CADlC;;AAGA,cAAI,CAAC,IAAIE,MAAJ,CAAWH,aAAX,EAA0BX,IAA1B,CAA+Ba,SAA/B,CAAL,EAAgD;AAC9C,kBAAM,IAAIE,KAAJ,CACDT,cAAcU,WAAd,EAAH,wBACWP,QADX,yBACuCI,SADvC,oCAEsBF,aAFtB,QADI,CAAN;AAID;AACF;AACF;AACF;AAnDU,GAAb;;AAsDAzB;;AAEA,SAAO5C,IAAP;AAED,CAvJY,CAuJV2E,MAvJU,CAAb","file":"util.js","sourcesContent":["/**\n * --------------------------------------------------------------------------\n * Bootstrap (v4.0.0-alpha.5): util.js\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * --------------------------------------------------------------------------\n */\n\nconst Util = (($) => {\n\n\n  /**\n   * ------------------------------------------------------------------------\n   * Private TransitionEnd Helpers\n   * ------------------------------------------------------------------------\n   */\n\n  let transition = false\n\n  const MAX_UID = 1000000\n\n  const TransitionEndEvent = {\n    WebkitTransition : 'webkitTransitionEnd',\n    MozTransition    : 'transitionend',\n    OTransition      : 'oTransitionEnd otransitionend',\n    transition       : 'transitionend'\n  }\n\n  // shoutout AngusCroll (https://goo.gl/pxwQGp)\n  function toType(obj) {\n    return {}.toString.call(obj).match(/\\s([a-zA-Z]+)/)[1].toLowerCase()\n  }\n\n  function isElement(obj) {\n    return (obj[0] || obj).nodeType\n  }\n\n  function getSpecialTransitionEndEvent() {\n    return {\n      bindType: transition.end,\n      delegateType: transition.end,\n      handle(event) {\n        if ($(event.target).is(this)) {\n          return event.handleObj.handler.apply(this, arguments) // eslint-disable-line prefer-rest-params\n        }\n        return undefined\n      }\n    }\n  }\n\n  function transitionEndTest() {\n    if (window.QUnit) {\n      return false\n    }\n\n    const el = document.createElement('bootstrap')\n\n    for (const name in TransitionEndEvent) {\n      if (el.style[name] !== undefined) {\n        return {\n          end: TransitionEndEvent[name]\n        }\n      }\n    }\n\n    return false\n  }\n\n  function transitionEndEmulator(duration) {\n    let called = false\n\n    $(this).one(Util.TRANSITION_END, () => {\n      called = true\n    })\n\n    setTimeout(() => {\n      if (!called) {\n        Util.triggerTransitionEnd(this)\n      }\n    }, duration)\n\n    return this\n  }\n\n  function setTransitionEndSupport() {\n    transition = transitionEndTest()\n\n    $.fn.emulateTransitionEnd = transitionEndEmulator\n\n    if (Util.supportsTransitionEnd()) {\n      $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent()\n    }\n  }\n\n\n  /**\n   * --------------------------------------------------------------------------\n   * Public Util Api\n   * --------------------------------------------------------------------------\n   */\n\n  const Util = {\n\n    TRANSITION_END: 'bsTransitionEnd',\n\n    getUID(prefix) {\n      do {\n        // eslint-disable-next-line no-bitwise\n        prefix += ~~(Math.random() * MAX_UID) // \"~~\" acts like a faster Math.floor() here\n      } while (document.getElementById(prefix))\n      return prefix\n    },\n\n    getSelectorFromElement(element) {\n      let selector = element.getAttribute('data-target')\n\n      if (!selector) {\n        selector = element.getAttribute('href') || ''\n        selector = /^#[a-z]/i.test(selector) ? selector : null\n      }\n\n      return selector\n    },\n\n    reflow(element) {\n      return element.offsetHeight\n    },\n\n    triggerTransitionEnd(element) {\n      $(element).trigger(transition.end)\n    },\n\n    supportsTransitionEnd() {\n      return Boolean(transition)\n    },\n\n    typeCheckConfig(componentName, config, configTypes) {\n      for (const property in configTypes) {\n        if (configTypes.hasOwnProperty(property)) {\n          const expectedTypes = configTypes[property]\n          const value         = config[property]\n          const valueType     = value && isElement(value) ?\n                                'element' : toType(value)\n\n          if (!new RegExp(expectedTypes).test(valueType)) {\n            throw new Error(\n              `${componentName.toUpperCase()}: ` +\n              `Option \"${property}\" provided type \"${valueType}\" ` +\n              `but expected type \"${expectedTypes}\".`)\n          }\n        }\n      }\n    }\n  }\n\n  setTransitionEndSupport()\n\n  return Util\n\n})(jQuery)\n\nexport default Util\n"]}
\ No newline at end of file
diff --git a/js/src/alert.js b/js/src/alert.js
index cff86dcdd..884a5dec8 100644
--- a/js/src/alert.js
+++ b/js/src/alert.js
@@ -3,7 +3,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): alert.js
+ * Bootstrap (v4.0.0-alpha.5): alert.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const Alert = (($) => {
    */
 
   const NAME                = 'alert'
-  const VERSION             = '4.0.0-alpha.4'
+  const VERSION             = '4.0.0-alpha.5'
   const DATA_KEY            = 'bs.alert'
   const EVENT_KEY           = `.${DATA_KEY}`
   const DATA_API_KEY        = '.data-api'
@@ -38,7 +38,7 @@ const Alert = (($) => {
   const ClassName = {
     ALERT : 'alert',
     FADE  : 'fade',
-    IN    : 'in'
+    SHOW  : 'show'
   }
 
 
@@ -67,8 +67,8 @@ const Alert = (($) => {
     close(element) {
       element = element || this._element
 
-      let rootElement = this._getRootElement(element)
-      let customEvent = this._triggerCloseEvent(rootElement)
+      const rootElement = this._getRootElement(element)
+      const customEvent = this._triggerCloseEvent(rootElement)
 
       if (customEvent.isDefaultPrevented()) {
         return
@@ -86,8 +86,8 @@ const Alert = (($) => {
     // private
 
     _getRootElement(element) {
-      let selector = Util.getSelectorFromElement(element)
-      let parent   = false
+      const selector = Util.getSelectorFromElement(element)
+      let parent     = false
 
       if (selector) {
         parent = $(selector)[0]
@@ -101,14 +101,14 @@ const Alert = (($) => {
     }
 
     _triggerCloseEvent(element) {
-      let closeEvent = $.Event(Event.CLOSE)
+      const closeEvent = $.Event(Event.CLOSE)
 
       $(element).trigger(closeEvent)
       return closeEvent
     }
 
     _removeElement(element) {
-      $(element).removeClass(ClassName.IN)
+      $(element).removeClass(ClassName.SHOW)
 
       if (!Util.supportsTransitionEnd() ||
           !$(element).hasClass(ClassName.FADE)) {
@@ -117,7 +117,7 @@ const Alert = (($) => {
       }
 
       $(element)
-        .one(Util.TRANSITION_END, $.proxy(this._destroyElement, this, element))
+        .one(Util.TRANSITION_END, (event) => this._destroyElement(element, event))
         .emulateTransitionEnd(TRANSITION_DURATION)
     }
 
@@ -133,8 +133,8 @@ const Alert = (($) => {
 
     static _jQueryInterface(config) {
       return this.each(function () {
-        let $element = $(this)
-        let data     = $element.data(DATA_KEY)
+        const $element = $(this)
+        let data       = $element.data(DATA_KEY)
 
         if (!data) {
           data = new Alert(this)
diff --git a/js/src/button.js b/js/src/button.js
index 24b0cd414..45e1424ff 100644
--- a/js/src/button.js
+++ b/js/src/button.js
@@ -1,6 +1,6 @@
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): button.js
+ * Bootstrap (v4.0.0-alpha.5): button.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -15,7 +15,7 @@ const Button = (($) => {
    */
 
   const NAME                = 'button'
-  const VERSION             = '4.0.0-alpha.4'
+  const VERSION             = '4.0.0-alpha.5'
   const DATA_KEY            = 'bs.button'
   const EVENT_KEY           = `.${DATA_KEY}`
   const DATA_API_KEY        = '.data-api'
@@ -66,12 +66,12 @@ const Button = (($) => {
 
     toggle() {
       let triggerChangeEvent = true
-      let rootElement        = $(this._element).closest(
+      const rootElement      = $(this._element).closest(
         Selector.DATA_TOGGLE
       )[0]
 
       if (rootElement) {
-        let input = $(this._element).find(Selector.INPUT)[0]
+        const input = $(this._element).find(Selector.INPUT)[0]
 
         if (input) {
           if (input.type === 'radio') {
@@ -80,7 +80,7 @@ const Button = (($) => {
               triggerChangeEvent = false
 
             } else {
-              let activeElement = $(rootElement).find(Selector.ACTIVE)[0]
+              const activeElement = $(rootElement).find(Selector.ACTIVE)[0]
 
               if (activeElement) {
                 $(activeElement).removeClass(ClassName.ACTIVE)
@@ -90,7 +90,7 @@ const Button = (($) => {
 
           if (triggerChangeEvent) {
             input.checked = !$(this._element).hasClass(ClassName.ACTIVE)
-            $(this._element).trigger('change')
+            $(input).trigger('change')
           }
 
           input.focus()
@@ -151,7 +151,7 @@ const Button = (($) => {
       Button._jQueryInterface.call($(button), 'toggle')
     })
     .on(Event.FOCUS_BLUR_DATA_API, Selector.DATA_TOGGLE_CARROT, (event) => {
-      let button = $(event.target).closest(Selector.BUTTON)[0]
+      const button = $(event.target).closest(Selector.BUTTON)[0]
       $(button).toggleClass(ClassName.FOCUS, /^focus(in)?$/.test(event.type))
     })
 
diff --git a/js/src/carousel.js b/js/src/carousel.js
index ff00d8aaf..9a1a668b2 100644
--- a/js/src/carousel.js
+++ b/js/src/carousel.js
@@ -3,7 +3,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): carousel.js
+ * Bootstrap (v4.0.0-alpha.5): carousel.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const Carousel = (($) => {
    */
 
   const NAME                = 'carousel'
-  const VERSION             = '4.0.0-alpha.4'
+  const VERSION             = '4.0.0-alpha.5'
   const DATA_KEY            = 'bs.carousel'
   const EVENT_KEY           = `.${DATA_KEY}`
   const DATA_API_KEY        = '.data-api'
@@ -45,7 +45,9 @@ const Carousel = (($) => {
 
   const Direction = {
     NEXT     : 'next',
-    PREVIOUS : 'prev'
+    PREV     : 'prev',
+    LEFT     : 'left',
+    RIGHT    : 'right'
   }
 
   const Event = {
@@ -62,8 +64,10 @@ const Carousel = (($) => {
     CAROUSEL : 'carousel',
     ACTIVE   : 'active',
     SLIDE    : 'slide',
-    RIGHT    : 'right',
-    LEFT     : 'left',
+    RIGHT    : 'carousel-item-right',
+    LEFT     : 'carousel-item-left',
+    NEXT     : 'carousel-item-next',
+    PREV     : 'carousel-item-prev',
     ITEM     : 'carousel-item'
   }
 
@@ -71,7 +75,7 @@ const Carousel = (($) => {
     ACTIVE      : '.active',
     ACTIVE_ITEM : '.active.carousel-item',
     ITEM        : '.carousel-item',
-    NEXT_PREV   : '.next, .prev',
+    NEXT_PREV   : '.carousel-item-next, .carousel-item-prev',
     INDICATORS  : '.carousel-indicators',
     DATA_SLIDE  : '[data-slide], [data-slide-to]',
     DATA_RIDE   : '[data-ride="carousel"]'
@@ -116,9 +120,10 @@ const Carousel = (($) => {
     // public
 
     next() {
-      if (!this._isSliding) {
-        this._slide(Direction.NEXT)
+      if (this._isSliding) {
+        throw new Error('Carousel is sliding')
       }
+      this._slide(Direction.NEXT)
     }
 
     nextWhenVisible() {
@@ -129,9 +134,10 @@ const Carousel = (($) => {
     }
 
     prev() {
-      if (!this._isSliding) {
-        this._slide(Direction.PREVIOUS)
+      if (this._isSliding) {
+        throw new Error('Carousel is sliding')
       }
+      this._slide(Direction.PREVIOUS)
     }
 
     pause(event) {
@@ -161,7 +167,8 @@ const Carousel = (($) => {
 
       if (this._config.interval && !this._isPaused) {
         this._interval = setInterval(
-          $.proxy(document.visibilityState ? this.nextWhenVisible : this.next, this), this._config.interval
+          (document.visibilityState ? this.nextWhenVisible : this.next).bind(this),
+          this._config.interval
         )
       }
     }
@@ -169,9 +176,9 @@ const Carousel = (($) => {
     to(index) {
       this._activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0]
 
-      let activeIndex = this._getItemIndex(this._activeElement)
+      const activeIndex = this._getItemIndex(this._activeElement)
 
-      if (index > (this._items.length - 1) || index < 0) {
+      if (index > this._items.length - 1 || index < 0) {
         return
       }
 
@@ -186,7 +193,7 @@ const Carousel = (($) => {
         return
       }
 
-      let direction = index > activeIndex ?
+      const direction = index > activeIndex ?
         Direction.NEXT :
         Direction.PREVIOUS
 
@@ -219,29 +226,29 @@ const Carousel = (($) => {
     _addEventListeners() {
       if (this._config.keyboard) {
         $(this._element)
-          .on(Event.KEYDOWN, $.proxy(this._keydown, this))
+          .on(Event.KEYDOWN, (event) => this._keydown(event))
       }
 
       if (this._config.pause === 'hover' &&
         !('ontouchstart' in document.documentElement)) {
         $(this._element)
-          .on(Event.MOUSEENTER, $.proxy(this.pause, this))
-          .on(Event.MOUSELEAVE, $.proxy(this.cycle, this))
+          .on(Event.MOUSEENTER, (event) => this.pause(event))
+          .on(Event.MOUSELEAVE, (event) => this.cycle(event))
       }
     }
 
     _keydown(event) {
-      event.preventDefault()
-
       if (/input|textarea/i.test(event.target.tagName)) {
         return
       }
 
       switch (event.which) {
         case ARROW_LEFT_KEYCODE:
+          event.preventDefault()
           this.prev()
           break
         case ARROW_RIGHT_KEYCODE:
+          event.preventDefault()
           this.next()
           break
         default:
@@ -255,29 +262,29 @@ const Carousel = (($) => {
     }
 
     _getItemByDirection(direction, activeElement) {
-      let isNextDirection = direction === Direction.NEXT
-      let isPrevDirection = direction === Direction.PREVIOUS
-      let activeIndex     = this._getItemIndex(activeElement)
-      let lastItemIndex   = (this._items.length - 1)
-      let isGoingToWrap   = (isPrevDirection && activeIndex === 0) ||
-                            (isNextDirection && activeIndex === lastItemIndex)
+      const isNextDirection = direction === Direction.NEXT
+      const isPrevDirection = direction === Direction.PREVIOUS
+      const activeIndex     = this._getItemIndex(activeElement)
+      const lastItemIndex   = this._items.length - 1
+      const isGoingToWrap   = isPrevDirection && activeIndex === 0 ||
+                              isNextDirection && activeIndex === lastItemIndex
 
       if (isGoingToWrap && !this._config.wrap) {
         return activeElement
       }
 
-      let delta     = direction === Direction.PREVIOUS ? -1 : 1
-      let itemIndex = (activeIndex + delta) % this._items.length
+      const delta     = direction === Direction.PREVIOUS ? -1 : 1
+      const itemIndex = (activeIndex + delta) % this._items.length
 
       return itemIndex === -1 ?
         this._items[this._items.length - 1] : this._items[itemIndex]
     }
 
 
-    _triggerSlideEvent(relatedTarget, directionalClassname) {
-      let slideEvent = $.Event(Event.SLIDE, {
+    _triggerSlideEvent(relatedTarget, eventDirectionName) {
+      const slideEvent = $.Event(Event.SLIDE, {
         relatedTarget,
-        direction: directionalClassname
+        direction: eventDirectionName
       })
 
       $(this._element).trigger(slideEvent)
@@ -291,7 +298,7 @@ const Carousel = (($) => {
           .find(Selector.ACTIVE)
           .removeClass(ClassName.ACTIVE)
 
-        let nextIndicator = this._indicatorsElement.children[
+        const nextIndicator = this._indicatorsElement.children[
           this._getItemIndex(element)
         ]
 
@@ -302,22 +309,32 @@ const Carousel = (($) => {
     }
 
     _slide(direction, element) {
-      let activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0]
-      let nextElement   = element || activeElement &&
+      const activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0]
+      const nextElement   = element || activeElement &&
         this._getItemByDirection(direction, activeElement)
 
-      let isCycling = Boolean(this._interval)
+      const isCycling = Boolean(this._interval)
 
-      let directionalClassName = direction === Direction.NEXT ?
-        ClassName.LEFT :
-        ClassName.RIGHT
+      let directionalClassName
+      let orderClassName
+      let eventDirectionName
+
+      if (direction === Direction.NEXT) {
+        directionalClassName = ClassName.LEFT
+        orderClassName = ClassName.NEXT
+        eventDirectionName = Direction.LEFT
+      } else {
+        directionalClassName = ClassName.RIGHT
+        orderClassName = ClassName.PREV
+        eventDirectionName = Direction.RIGHT
+      }
 
       if (nextElement && $(nextElement).hasClass(ClassName.ACTIVE)) {
         this._isSliding = false
         return
       }
 
-      let slideEvent = this._triggerSlideEvent(nextElement, directionalClassName)
+      const slideEvent = this._triggerSlideEvent(nextElement, eventDirectionName)
       if (slideEvent.isDefaultPrevented()) {
         return
       }
@@ -335,15 +352,15 @@ const Carousel = (($) => {
 
       this._setActiveIndicatorElement(nextElement)
 
-      let slidEvent = $.Event(Event.SLID, {
+      const slidEvent = $.Event(Event.SLID, {
         relatedTarget: nextElement,
-        direction: directionalClassName
+        direction: eventDirectionName
       })
 
       if (Util.supportsTransitionEnd() &&
         $(this._element).hasClass(ClassName.SLIDE)) {
 
-        $(nextElement).addClass(direction)
+        $(nextElement).addClass(orderClassName)
 
         Util.reflow(nextElement)
 
@@ -353,15 +370,10 @@ const Carousel = (($) => {
         $(activeElement)
           .one(Util.TRANSITION_END, () => {
             $(nextElement)
-              .removeClass(directionalClassName)
-              .removeClass(direction)
-
-            $(nextElement).addClass(ClassName.ACTIVE)
+              .removeClass(`${directionalClassName} ${orderClassName}`)
+              .addClass(ClassName.ACTIVE)
 
-            $(activeElement)
-              .removeClass(ClassName.ACTIVE)
-              .removeClass(direction)
-              .removeClass(directionalClassName)
+            $(activeElement).removeClass(`${ClassName.ACTIVE} ${orderClassName} ${directionalClassName}`)
 
             this._isSliding = false
 
@@ -389,13 +401,13 @@ const Carousel = (($) => {
     static _jQueryInterface(config) {
       return this.each(function () {
         let data      = $(this).data(DATA_KEY)
-        let _config = $.extend({}, Default, $(this).data())
+        const _config = $.extend({}, Default, $(this).data())
 
         if (typeof config === 'object') {
           $.extend(_config, config)
         }
 
-        let action = typeof config === 'string' ? config : _config.slide
+        const action = typeof config === 'string' ? config : _config.slide
 
         if (!data) {
           data = new Carousel(this, _config)
@@ -417,20 +429,20 @@ const Carousel = (($) => {
     }
 
     static _dataApiClickHandler(event) {
-      let selector = Util.getSelectorFromElement(this)
+      const selector = Util.getSelectorFromElement(this)
 
       if (!selector) {
         return
       }
 
-      let target = $(selector)[0]
+      const target = $(selector)[0]
 
       if (!target || !$(target).hasClass(ClassName.CAROUSEL)) {
         return
       }
 
-      let config     = $.extend({}, $(target).data(), $(this).data())
-      let slideIndex = this.getAttribute('data-slide-to')
+      const config     = $.extend({}, $(target).data(), $(this).data())
+      const slideIndex = this.getAttribute('data-slide-to')
 
       if (slideIndex) {
         config.interval = false
@@ -459,7 +471,7 @@ const Carousel = (($) => {
 
   $(window).on(Event.LOAD_DATA_API, () => {
     $(Selector.DATA_RIDE).each(function () {
-      let $carousel = $(this)
+      const $carousel = $(this)
       Carousel._jQueryInterface.call($carousel, $carousel.data())
     })
   })
diff --git a/js/src/collapse.js b/js/src/collapse.js
index 560ab2cbd..ad8815993 100644
--- a/js/src/collapse.js
+++ b/js/src/collapse.js
@@ -3,7 +3,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): collapse.js
+ * Bootstrap (v4.0.0-alpha.5): collapse.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const Collapse = (($) => {
    */
 
   const NAME                = 'collapse'
-  const VERSION             = '4.0.0-alpha.4'
+  const VERSION             = '4.0.0-alpha.5'
   const DATA_KEY            = 'bs.collapse'
   const EVENT_KEY           = `.${DATA_KEY}`
   const DATA_API_KEY        = '.data-api'
@@ -44,7 +44,7 @@ const Collapse = (($) => {
   }
 
   const ClassName = {
-    IN         : 'in',
+    SHOW       : 'show',
     COLLAPSE   : 'collapse',
     COLLAPSING : 'collapsing',
     COLLAPSED  : 'collapsed'
@@ -56,7 +56,7 @@ const Collapse = (($) => {
   }
 
   const Selector = {
-    ACTIVES     : '.card > .in, .card > .collapsing',
+    ACTIVES     : '.card > .show, .card > .collapsing',
     DATA_TOGGLE : '[data-toggle="collapse"]'
   }
 
@@ -104,7 +104,7 @@ const Collapse = (($) => {
     // public
 
     toggle() {
-      if ($(this._element).hasClass(ClassName.IN)) {
+      if ($(this._element).hasClass(ClassName.SHOW)) {
         this.hide()
       } else {
         this.show()
@@ -112,8 +112,11 @@ const Collapse = (($) => {
     }
 
     show() {
-      if (this._isTransitioning ||
-        $(this._element).hasClass(ClassName.IN)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning')
+      }
+
+      if ($(this._element).hasClass(ClassName.SHOW)) {
         return
       }
 
@@ -121,7 +124,7 @@ const Collapse = (($) => {
       let activesData
 
       if (this._parent) {
-        actives = $.makeArray($(Selector.ACTIVES))
+        actives = $.makeArray($(this._parent).find(Selector.ACTIVES))
         if (!actives.length) {
           actives = null
         }
@@ -134,7 +137,7 @@ const Collapse = (($) => {
         }
       }
 
-      let startEvent = $.Event(Event.SHOW)
+      const startEvent = $.Event(Event.SHOW)
       $(this._element).trigger(startEvent)
       if (startEvent.isDefaultPrevented()) {
         return
@@ -147,7 +150,7 @@ const Collapse = (($) => {
         }
       }
 
-      let dimension = this._getDimension()
+      const dimension = this._getDimension()
 
       $(this._element)
         .removeClass(ClassName.COLLAPSE)
@@ -164,11 +167,11 @@ const Collapse = (($) => {
 
       this.setTransitioning(true)
 
-      let complete = () => {
+      const complete = () => {
         $(this._element)
           .removeClass(ClassName.COLLAPSING)
           .addClass(ClassName.COLLAPSE)
-          .addClass(ClassName.IN)
+          .addClass(ClassName.SHOW)
 
         this._element.style[dimension] = ''
 
@@ -182,8 +185,8 @@ const Collapse = (($) => {
         return
       }
 
-      let capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1)
-      let scrollSize           = `scroll${capitalizedDimension}`
+      const capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1)
+      const scrollSize           = `scroll${capitalizedDimension}`
 
       $(this._element)
         .one(Util.TRANSITION_END, complete)
@@ -193,19 +196,22 @@ const Collapse = (($) => {
     }
 
     hide() {
-      if (this._isTransitioning ||
-        !$(this._element).hasClass(ClassName.IN)) {
+      if (this._isTransitioning) {
+        throw new Error('Collapse is transitioning')
+      }
+
+      if (!$(this._element).hasClass(ClassName.SHOW)) {
         return
       }
 
-      let startEvent = $.Event(Event.HIDE)
+      const startEvent = $.Event(Event.HIDE)
       $(this._element).trigger(startEvent)
       if (startEvent.isDefaultPrevented()) {
         return
       }
 
-      let dimension       = this._getDimension()
-      let offsetDimension = dimension === Dimension.WIDTH ?
+      const dimension       = this._getDimension()
+      const offsetDimension = dimension === Dimension.WIDTH ?
         'offsetWidth' : 'offsetHeight'
 
       this._element.style[dimension] = `${this._element[offsetDimension]}px`
@@ -215,7 +221,7 @@ const Collapse = (($) => {
       $(this._element)
         .addClass(ClassName.COLLAPSING)
         .removeClass(ClassName.COLLAPSE)
-        .removeClass(ClassName.IN)
+        .removeClass(ClassName.SHOW)
 
       this._element.setAttribute('aria-expanded', false)
 
@@ -227,7 +233,7 @@ const Collapse = (($) => {
 
       this.setTransitioning(true)
 
-      let complete = () => {
+      const complete = () => {
         this.setTransitioning(false)
         $(this._element)
           .removeClass(ClassName.COLLAPSING)
@@ -272,13 +278,13 @@ const Collapse = (($) => {
     }
 
     _getDimension() {
-      let hasWidth = $(this._element).hasClass(Dimension.WIDTH)
+      const hasWidth = $(this._element).hasClass(Dimension.WIDTH)
       return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT
     }
 
     _getParent() {
-      let parent   = $(this._config.parent)[0]
-      let selector =
+      const parent   = $(this._config.parent)[0]
+      const selector =
         `[data-toggle="collapse"][data-parent="${this._config.parent}"]`
 
       $(parent).find(selector).each((i, element) => {
@@ -293,7 +299,7 @@ const Collapse = (($) => {
 
     _addAriaAndCollapsedClass(element, triggerArray) {
       if (element) {
-        let isOpen = $(element).hasClass(ClassName.IN)
+        const isOpen = $(element).hasClass(ClassName.SHOW)
         element.setAttribute('aria-expanded', isOpen)
 
         if (triggerArray.length) {
@@ -308,15 +314,15 @@ const Collapse = (($) => {
     // static
 
     static _getTargetFromElement(element) {
-      let selector = Util.getSelectorFromElement(element)
+      const selector = Util.getSelectorFromElement(element)
       return selector ? $(selector)[0] : null
     }
 
     static _jQueryInterface(config) {
       return this.each(function () {
-        let $this   = $(this)
-        let data    = $this.data(DATA_KEY)
-        let _config = $.extend(
+        const $this   = $(this)
+        let data      = $this.data(DATA_KEY)
+        const _config = $.extend(
           {},
           Default,
           $this.data(),
@@ -353,9 +359,9 @@ const Collapse = (($) => {
   $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
     event.preventDefault()
 
-    let target = Collapse._getTargetFromElement(this)
-    let data   = $(target).data(DATA_KEY)
-    let config = data ? 'toggle' : $(this).data()
+    const target = Collapse._getTargetFromElement(this)
+    const data   = $(target).data(DATA_KEY)
+    const config = data ? 'toggle' : $(this).data()
 
     Collapse._jQueryInterface.call($(target), config)
   })
diff --git a/js/src/dropdown.js b/js/src/dropdown.js
index e38792d3b..97bba1c76 100644
--- a/js/src/dropdown.js
+++ b/js/src/dropdown.js
@@ -3,7 +3,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): dropdown.js
+ * Bootstrap (v4.0.0-alpha.5): dropdown.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const Dropdown = (($) => {
    */
 
   const NAME                     = 'dropdown'
-  const VERSION                  = '4.0.0-alpha.4'
+  const VERSION                  = '4.0.0-alpha.5'
   const DATA_KEY                 = 'bs.dropdown'
   const EVENT_KEY                = `.${DATA_KEY}`
   const DATA_API_KEY             = '.data-api'
@@ -41,7 +41,7 @@ const Dropdown = (($) => {
   const ClassName = {
     BACKDROP : 'dropdown-backdrop',
     DISABLED : 'disabled',
-    OPEN     : 'open'
+    SHOW     : 'show'
   }
 
   const Selector = {
@@ -85,8 +85,8 @@ const Dropdown = (($) => {
         return false
       }
 
-      let parent   = Dropdown._getParentFromElement(this)
-      let isActive = $(parent).hasClass(ClassName.OPEN)
+      const parent   = Dropdown._getParentFromElement(this)
+      const isActive = $(parent).hasClass(ClassName.SHOW)
 
       Dropdown._clearMenus()
 
@@ -95,17 +95,19 @@ const Dropdown = (($) => {
       }
 
       if ('ontouchstart' in document.documentElement &&
-         (!$(parent).closest(Selector.NAVBAR_NAV).length)) {
+         !$(parent).closest(Selector.NAVBAR_NAV).length) {
 
         // if mobile we use a backdrop because click events don't delegate
-        let dropdown       = document.createElement('div')
+        const dropdown     = document.createElement('div')
         dropdown.className = ClassName.BACKDROP
         $(dropdown).insertBefore(this)
         $(dropdown).on('click', Dropdown._clearMenus)
       }
 
-      let relatedTarget = { relatedTarget : this }
-      let showEvent     = $.Event(Event.SHOW, relatedTarget)
+      const relatedTarget = {
+        relatedTarget : this
+      }
+      const showEvent     = $.Event(Event.SHOW, relatedTarget)
 
       $(parent).trigger(showEvent)
 
@@ -114,9 +116,9 @@ const Dropdown = (($) => {
       }
 
       this.focus()
-      this.setAttribute('aria-expanded', 'true')
+      this.setAttribute('aria-expanded', true)
 
-      $(parent).toggleClass(ClassName.OPEN)
+      $(parent).toggleClass(ClassName.SHOW)
       $(parent).trigger($.Event(Event.SHOWN, relatedTarget))
 
       return false
@@ -140,10 +142,11 @@ const Dropdown = (($) => {
 
     static _jQueryInterface(config) {
       return this.each(function () {
-        let data  = $(this).data(DATA_KEY)
+        let data = $(this).data(DATA_KEY)
 
         if (!data) {
-          $(this).data(DATA_KEY, (data = new Dropdown(this)))
+          data = new Dropdown(this)
+          $(this).data(DATA_KEY, data)
         }
 
         if (typeof config === 'string') {
@@ -160,28 +163,30 @@ const Dropdown = (($) => {
         return
       }
 
-      let backdrop = $(Selector.BACKDROP)[0]
+      const backdrop = $(Selector.BACKDROP)[0]
       if (backdrop) {
         backdrop.parentNode.removeChild(backdrop)
       }
 
-      let toggles = $.makeArray($(Selector.DATA_TOGGLE))
+      const toggles = $.makeArray($(Selector.DATA_TOGGLE))
 
       for (let i = 0; i < toggles.length; i++) {
-        let parent        = Dropdown._getParentFromElement(toggles[i])
-        let relatedTarget = { relatedTarget : toggles[i] }
+        const parent        = Dropdown._getParentFromElement(toggles[i])
+        const relatedTarget = {
+          relatedTarget : toggles[i]
+        }
 
-        if (!$(parent).hasClass(ClassName.OPEN)) {
+        if (!$(parent).hasClass(ClassName.SHOW)) {
           continue
         }
 
         if (event && event.type === 'click' &&
-           (/input|textarea/i.test(event.target.tagName)) &&
-           ($.contains(parent, event.target))) {
+           /input|textarea/i.test(event.target.tagName) &&
+           $.contains(parent, event.target)) {
           continue
         }
 
-        let hideEvent = $.Event(Event.HIDE, relatedTarget)
+        const hideEvent = $.Event(Event.HIDE, relatedTarget)
         $(parent).trigger(hideEvent)
         if (hideEvent.isDefaultPrevented()) {
           continue
@@ -190,14 +195,14 @@ const Dropdown = (($) => {
         toggles[i].setAttribute('aria-expanded', 'false')
 
         $(parent)
-          .removeClass(ClassName.OPEN)
+          .removeClass(ClassName.SHOW)
           .trigger($.Event(Event.HIDDEN, relatedTarget))
       }
     }
 
     static _getParentFromElement(element) {
       let parent
-      let selector = Util.getSelectorFromElement(element)
+      const selector = Util.getSelectorFromElement(element)
 
       if (selector) {
         parent = $(selector)[0]
@@ -219,14 +224,14 @@ const Dropdown = (($) => {
         return
       }
 
-      let parent   = Dropdown._getParentFromElement(this)
-      let isActive = $(parent).hasClass(ClassName.OPEN)
+      const parent   = Dropdown._getParentFromElement(this)
+      const isActive = $(parent).hasClass(ClassName.SHOW)
 
-      if ((!isActive && event.which !== ESCAPE_KEYCODE) ||
-           (isActive && event.which === ESCAPE_KEYCODE)) {
+      if (!isActive && event.which !== ESCAPE_KEYCODE ||
+           isActive && event.which === ESCAPE_KEYCODE) {
 
         if (event.which === ESCAPE_KEYCODE) {
-          let toggle = $(parent).find(Selector.DATA_TOGGLE)[0]
+          const toggle = $(parent).find(Selector.DATA_TOGGLE)[0]
           $(toggle).trigger('focus')
         }
 
@@ -234,11 +239,7 @@ const Dropdown = (($) => {
         return
       }
 
-      let items = $.makeArray($(Selector.VISIBLE_ITEMS))
-
-      items = items.filter((item) => {
-        return item.offsetWidth || item.offsetHeight
-      })
+      const items = $(parent).find(Selector.VISIBLE_ITEMS).get()
 
       if (!items.length) {
         return
diff --git a/js/src/modal.js b/js/src/modal.js
index ebd3e4a34..94abd19f4 100644
--- a/js/src/modal.js
+++ b/js/src/modal.js
@@ -3,7 +3,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): modal.js
+ * Bootstrap (v4.0.0-alpha.5): modal.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const Modal = (($) => {
    */
 
   const NAME                         = 'modal'
-  const VERSION                      = '4.0.0-alpha.4'
+  const VERSION                      = '4.0.0-alpha.5'
   const DATA_KEY                     = 'bs.modal'
   const EVENT_KEY                    = `.${DATA_KEY}`
   const DATA_API_KEY                 = '.data-api'
@@ -60,7 +60,7 @@ const Modal = (($) => {
     BACKDROP           : 'modal-backdrop',
     OPEN               : 'modal-open',
     FADE               : 'fade',
-    IN                 : 'in'
+    SHOW               : 'show'
   }
 
   const Selector = {
@@ -87,6 +87,7 @@ const Modal = (($) => {
       this._isShown             = false
       this._isBodyOverflowing   = false
       this._ignoreBackdropClick = false
+      this._isTransitioning     = false
       this._originalBodyPadding = 0
       this._scrollbarWidth      = 0
     }
@@ -110,7 +111,15 @@ const Modal = (($) => {
     }
 
     show(relatedTarget) {
-      let showEvent = $.Event(Event.SHOW, {
+      if (this._isTransitioning) {
+        throw new Error('Modal is transitioning')
+      }
+
+      if (Util.supportsTransitionEnd() &&
+        $(this._element).hasClass(ClassName.FADE)) {
+        this._isTransitioning = true
+      }
+      const showEvent = $.Event(Event.SHOW, {
         relatedTarget
       })
 
@@ -133,7 +142,7 @@ const Modal = (($) => {
       $(this._element).on(
         Event.CLICK_DISMISS,
         Selector.DATA_DISMISS,
-        $.proxy(this.hide, this)
+        (event) => this.hide(event)
       )
 
       $(this._dialog).on(Event.MOUSEDOWN_DISMISS, () => {
@@ -144,9 +153,7 @@ const Modal = (($) => {
         })
       })
 
-      this._showBackdrop(
-        $.proxy(this._showElement, this, relatedTarget)
-      )
+      this._showBackdrop(() => this._showElement(relatedTarget))
     }
 
     hide(event) {
@@ -154,8 +161,17 @@ const Modal = (($) => {
         event.preventDefault()
       }
 
-      let hideEvent = $.Event(Event.HIDE)
+      if (this._isTransitioning) {
+        throw new Error('Modal is transitioning')
+      }
 
+      const transition = Util.supportsTransitionEnd() &&
+        $(this._element).hasClass(ClassName.FADE)
+      if (transition) {
+        this._isTransitioning = true
+      }
+
+      const hideEvent = $.Event(Event.HIDE)
       $(this._element).trigger(hideEvent)
 
       if (!this._isShown || hideEvent.isDefaultPrevented()) {
@@ -169,16 +185,14 @@ const Modal = (($) => {
 
       $(document).off(Event.FOCUSIN)
 
-      $(this._element).removeClass(ClassName.IN)
+      $(this._element).removeClass(ClassName.SHOW)
 
       $(this._element).off(Event.CLICK_DISMISS)
       $(this._dialog).off(Event.MOUSEDOWN_DISMISS)
 
-      if (Util.supportsTransitionEnd() &&
-         ($(this._element).hasClass(ClassName.FADE))) {
-
+      if (transition) {
         $(this._element)
-          .one(Util.TRANSITION_END, $.proxy(this._hideModal, this))
+          .one(Util.TRANSITION_END, (event) => this._hideModal(event))
           .emulateTransitionEnd(TRANSITION_DURATION)
       } else {
         this._hideModal()
@@ -188,10 +202,7 @@ const Modal = (($) => {
     dispose() {
       $.removeData(this._element, DATA_KEY)
 
-      $(window).off(EVENT_KEY)
-      $(document).off(EVENT_KEY)
-      $(this._element).off(EVENT_KEY)
-      $(this._backdrop).off(EVENT_KEY)
+      $(window, document, this._element, this._backdrop).off(EVENT_KEY)
 
       this._config              = null
       this._element             = null
@@ -214,11 +225,11 @@ const Modal = (($) => {
     }
 
     _showElement(relatedTarget) {
-      let transition = Util.supportsTransitionEnd() &&
+      const transition = Util.supportsTransitionEnd() &&
         $(this._element).hasClass(ClassName.FADE)
 
       if (!this._element.parentNode ||
-         (this._element.parentNode.nodeType !== Node.ELEMENT_NODE)) {
+         this._element.parentNode.nodeType !== Node.ELEMENT_NODE) {
         // don't move modals dom position
         document.body.appendChild(this._element)
       }
@@ -231,20 +242,21 @@ const Modal = (($) => {
         Util.reflow(this._element)
       }
 
-      $(this._element).addClass(ClassName.IN)
+      $(this._element).addClass(ClassName.SHOW)
 
       if (this._config.focus) {
         this._enforceFocus()
       }
 
-      let shownEvent = $.Event(Event.SHOWN, {
+      const shownEvent = $.Event(Event.SHOWN, {
         relatedTarget
       })
 
-      let transitionComplete = () => {
+      const transitionComplete = () => {
         if (this._config.focus) {
           this._element.focus()
         }
+        this._isTransitioning = false
         $(this._element).trigger(shownEvent)
       }
 
@@ -263,7 +275,7 @@ const Modal = (($) => {
         .on(Event.FOCUSIN, (event) => {
           if (document !== event.target &&
               this._element !== event.target &&
-              (!$(this._element).has(event.target).length)) {
+              !$(this._element).has(event.target).length) {
             this._element.focus()
           }
         })
@@ -284,7 +296,7 @@ const Modal = (($) => {
 
     _setResizeEvent() {
       if (this._isShown) {
-        $(window).on(Event.RESIZE, $.proxy(this._handleUpdate, this))
+        $(window).on(Event.RESIZE, (event) => this._handleUpdate(event))
       } else {
         $(window).off(Event.RESIZE)
       }
@@ -293,6 +305,7 @@ const Modal = (($) => {
     _hideModal() {
       this._element.style.display = 'none'
       this._element.setAttribute('aria-hidden', 'true')
+      this._isTransitioning = false
       this._showBackdrop(() => {
         $(document.body).removeClass(ClassName.OPEN)
         this._resetAdjustments()
@@ -309,11 +322,11 @@ const Modal = (($) => {
     }
 
     _showBackdrop(callback) {
-      let animate = $(this._element).hasClass(ClassName.FADE) ?
+      const animate = $(this._element).hasClass(ClassName.FADE) ?
         ClassName.FADE : ''
 
       if (this._isShown && this._config.backdrop) {
-        let doAnimate = Util.supportsTransitionEnd() && animate
+        const doAnimate = Util.supportsTransitionEnd() && animate
 
         this._backdrop = document.createElement('div')
         this._backdrop.className = ClassName.BACKDROP
@@ -343,7 +356,7 @@ const Modal = (($) => {
           Util.reflow(this._backdrop)
         }
 
-        $(this._backdrop).addClass(ClassName.IN)
+        $(this._backdrop).addClass(ClassName.SHOW)
 
         if (!callback) {
           return
@@ -359,9 +372,9 @@ const Modal = (($) => {
           .emulateTransitionEnd(BACKDROP_TRANSITION_DURATION)
 
       } else if (!this._isShown && this._backdrop) {
-        $(this._backdrop).removeClass(ClassName.IN)
+        $(this._backdrop).removeClass(ClassName.SHOW)
 
-        let callbackRemove = () => {
+        const callbackRemove = () => {
           this._removeBackdrop()
           if (callback) {
             callback()
@@ -369,7 +382,7 @@ const Modal = (($) => {
         }
 
         if (Util.supportsTransitionEnd() &&
-           ($(this._element).hasClass(ClassName.FADE))) {
+           $(this._element).hasClass(ClassName.FADE)) {
           $(this._backdrop)
             .one(Util.TRANSITION_END, callbackRemove)
             .emulateTransitionEnd(BACKDROP_TRANSITION_DURATION)
@@ -393,7 +406,7 @@ const Modal = (($) => {
     }
 
     _adjustDialog() {
-      let isModalOverflowing =
+      const isModalOverflowing =
         this._element.scrollHeight > document.documentElement.clientHeight
 
       if (!this._isBodyOverflowing && isModalOverflowing) {
@@ -416,7 +429,7 @@ const Modal = (($) => {
     }
 
     _setScrollbar() {
-      let bodyPadding = parseInt(
+      const bodyPadding = parseInt(
         $(Selector.FIXED_CONTENT).css('padding-right') || 0,
         10
       )
@@ -434,10 +447,10 @@ const Modal = (($) => {
     }
 
     _getScrollbarWidth() { // thx d.walsh
-      let scrollDiv = document.createElement('div')
+      const scrollDiv = document.createElement('div')
       scrollDiv.className = ClassName.SCROLLBAR_MEASURER
       document.body.appendChild(scrollDiv)
-      let scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth
+      const scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth
       document.body.removeChild(scrollDiv)
       return scrollbarWidth
     }
@@ -447,8 +460,8 @@ const Modal = (($) => {
 
     static _jQueryInterface(config, relatedTarget) {
       return this.each(function () {
-        let data    = $(this).data(DATA_KEY)
-        let _config = $.extend(
+        let data      = $(this).data(DATA_KEY)
+        const _config = $.extend(
           {},
           Modal.Default,
           $(this).data(),
@@ -482,20 +495,20 @@ const Modal = (($) => {
 
   $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
     let target
-    let selector = Util.getSelectorFromElement(this)
+    const selector = Util.getSelectorFromElement(this)
 
     if (selector) {
       target = $(selector)[0]
     }
 
-    let config = $(target).data(DATA_KEY) ?
+    const config = $(target).data(DATA_KEY) ?
       'toggle' : $.extend({}, $(target).data(), $(this).data())
 
-    if (this.tagName === 'A') {
+    if (this.tagName === 'A' || this.tagName === 'AREA') {
       event.preventDefault()
     }
 
-    let $target = $(target).one(Event.SHOW, (showEvent) => {
+    const $target = $(target).one(Event.SHOW, (showEvent) => {
       if (showEvent.isDefaultPrevented()) {
         // only register focus restorer if modal will actually get shown
         return
diff --git a/js/src/popover.js b/js/src/popover.js
index 26ad988d4..33bc9e48c 100644
--- a/js/src/popover.js
+++ b/js/src/popover.js
@@ -3,7 +3,7 @@ import Tooltip from './tooltip'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): popover.js
+ * Bootstrap (v4.0.0-alpha.5): popover.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const Popover = (($) => {
    */
 
   const NAME                = 'popover'
-  const VERSION             = '4.0.0-alpha.4'
+  const VERSION             = '4.0.0-alpha.5'
   const DATA_KEY            = 'bs.popover'
   const EVENT_KEY           = `.${DATA_KEY}`
   const JQUERY_NO_CONFLICT  = $.fn[NAME]
@@ -38,7 +38,7 @@ const Popover = (($) => {
 
   const ClassName = {
     FADE : 'fade',
-    IN  : 'in'
+    SHOW : 'show'
   }
 
   const Selector = {
@@ -107,19 +107,17 @@ const Popover = (($) => {
     }
 
     getTipElement() {
-      return (this.tip = this.tip || $(this.config.template)[0])
+      return this.tip = this.tip || $(this.config.template)[0]
     }
 
     setContent() {
-      let $tip = $(this.getTipElement())
+      const $tip = $(this.getTipElement())
 
       // we use append for html objects to maintain js events
       this.setElementContent($tip.find(Selector.TITLE), this.getTitle())
       this.setElementContent($tip.find(Selector.CONTENT), this._getContent())
 
-      $tip
-        .removeClass(ClassName.FADE)
-        .removeClass(ClassName.IN)
+      $tip.removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)
 
       this.cleanupTether()
     }
@@ -138,8 +136,8 @@ const Popover = (($) => {
 
     static _jQueryInterface(config) {
       return this.each(function () {
-        let data   = $(this).data(DATA_KEY)
-        let _config = typeof config === 'object' ? config : null
+        let data      = $(this).data(DATA_KEY)
+        const _config = typeof config === 'object' ? config : null
 
         if (!data && /destroy|hide/.test(config)) {
           return
diff --git a/js/src/scrollspy.js b/js/src/scrollspy.js
index a664090fb..0a4708bf9 100644
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@@ -3,7 +3,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): scrollspy.js
+ * Bootstrap (v4.0.0-alpha.5): scrollspy.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const ScrollSpy = (($) => {
    */
 
   const NAME               = 'scrollspy'
-  const VERSION            = '4.0.0-alpha.4'
+  const VERSION            = '4.0.0-alpha.5'
   const DATA_KEY           = 'bs.scrollspy'
   const EVENT_KEY          = `.${DATA_KEY}`
   const DATA_API_KEY       = '.data-api'
@@ -87,7 +87,7 @@ const ScrollSpy = (($) => {
       this._activeTarget  = null
       this._scrollHeight  = 0
 
-      $(this._scrollElement).on(Event.SCROLL, $.proxy(this._process, this))
+      $(this._scrollElement).on(Event.SCROLL, (event) => this._process(event))
 
       this.refresh()
       this._process()
@@ -108,13 +108,13 @@ const ScrollSpy = (($) => {
     // public
 
     refresh() {
-      let autoMethod = this._scrollElement !== this._scrollElement.window ?
+      const autoMethod = this._scrollElement !== this._scrollElement.window ?
         OffsetMethod.POSITION : OffsetMethod.OFFSET
 
-      let offsetMethod = this._config.method === 'auto' ?
+      const offsetMethod = this._config.method === 'auto' ?
         autoMethod : this._config.method
 
-      let offsetBase = offsetMethod === OffsetMethod.POSITION ?
+      const offsetBase = offsetMethod === OffsetMethod.POSITION ?
         this._getScrollTop() : 0
 
       this._offsets = []
@@ -122,12 +122,12 @@ const ScrollSpy = (($) => {
 
       this._scrollHeight = this._getScrollHeight()
 
-      let targets = $.makeArray($(this._selector))
+      const targets = $.makeArray($(this._selector))
 
       targets
         .map((element) => {
           let target
-          let targetSelector = Util.getSelectorFromElement(element)
+          const targetSelector = Util.getSelectorFromElement(element)
 
           if (targetSelector) {
             target = $(targetSelector)[0]
@@ -196,33 +196,39 @@ const ScrollSpy = (($) => {
       )
     }
 
+    _getOffsetHeight() {
+      return this._scrollElement === window ?
+          window.innerHeight : this._scrollElement.offsetHeight
+    }
+
     _process() {
-      let scrollTop    = this._getScrollTop() + this._config.offset
-      let scrollHeight = this._getScrollHeight()
-      let maxScroll    = this._config.offset
+      const scrollTop    = this._getScrollTop() + this._config.offset
+      const scrollHeight = this._getScrollHeight()
+      const maxScroll    = this._config.offset
         + scrollHeight
-        - this._scrollElement.offsetHeight
+        - this._getOffsetHeight()
 
       if (this._scrollHeight !== scrollHeight) {
         this.refresh()
       }
 
       if (scrollTop >= maxScroll) {
-        let target = this._targets[this._targets.length - 1]
+        const target = this._targets[this._targets.length - 1]
 
         if (this._activeTarget !== target) {
           this._activate(target)
         }
+        return
       }
 
-      if (this._activeTarget && scrollTop < this._offsets[0]) {
+      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
         this._activeTarget = null
         this._clear()
         return
       }
 
       for (let i = this._offsets.length; i--;) {
-        let isActiveTarget = this._activeTarget !== this._targets[i]
+        const isActiveTarget = this._activeTarget !== this._targets[i]
             && scrollTop >= this._offsets[i]
             && (this._offsets[i + 1] === undefined ||
                 scrollTop < this._offsets[i + 1])
@@ -244,7 +250,7 @@ const ScrollSpy = (($) => {
                `${selector}[href="${target}"]`
       })
 
-      let $link = $(queries.join(','))
+      const $link = $(queries.join(','))
 
       if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
         $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)
@@ -252,7 +258,7 @@ const ScrollSpy = (($) => {
       } else {
         // todo (fat) this is kinda sus...
         // recursively add actives to tested nav-links
-        $link.parents(Selector.LI).find(Selector.NAV_LINKS).addClass(ClassName.ACTIVE)
+        $link.parents(Selector.LI).find(`> ${Selector.NAV_LINKS}`).addClass(ClassName.ACTIVE)
       }
 
       $(this._scrollElement).trigger(Event.ACTIVATE, {
@@ -269,8 +275,8 @@ const ScrollSpy = (($) => {
 
     static _jQueryInterface(config) {
       return this.each(function () {
-        let data    = $(this).data(DATA_KEY)
-        let _config = typeof config === 'object' && config || null
+        let data      = $(this).data(DATA_KEY)
+        const _config = typeof config === 'object' && config
 
         if (!data) {
           data = new ScrollSpy(this, _config)
@@ -297,10 +303,10 @@ const ScrollSpy = (($) => {
    */
 
   $(window).on(Event.LOAD_DATA_API, () => {
-    let scrollSpys = $.makeArray($(Selector.DATA_SPY))
+    const scrollSpys = $.makeArray($(Selector.DATA_SPY))
 
     for (let i = scrollSpys.length; i--;) {
-      let $spy = $(scrollSpys[i])
+      const $spy = $(scrollSpys[i])
       ScrollSpy._jQueryInterface.call($spy, $spy.data())
     }
   })
diff --git a/js/src/tab.js b/js/src/tab.js
index bf059d367..2f4e453e0 100644
--- a/js/src/tab.js
+++ b/js/src/tab.js
@@ -3,7 +3,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): tab.js
+ * Bootstrap (v4.0.0-alpha.5): tab.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -18,7 +18,7 @@ const Tab = (($) => {
    */
 
   const NAME                = 'tab'
-  const VERSION             = '4.0.0-alpha.4'
+  const VERSION             = '4.0.0-alpha.5'
   const DATA_KEY            = 'bs.tab'
   const EVENT_KEY           = `.${DATA_KEY}`
   const DATA_API_KEY        = '.data-api'
@@ -36,15 +36,16 @@ const Tab = (($) => {
   const ClassName = {
     DROPDOWN_MENU : 'dropdown-menu',
     ACTIVE        : 'active',
+    DISABLED      : 'disabled',
     FADE          : 'fade',
-    IN            : 'in'
+    SHOW          : 'show'
   }
 
   const Selector = {
     A                     : 'a',
     LI                    : 'li',
     DROPDOWN              : '.dropdown',
-    UL                    : 'ul:not(.dropdown-menu)',
+    LIST                  : 'ul:not(.dropdown-menu), ol:not(.dropdown-menu)',
     FADE_CHILD            : '> .nav-item .fade, > .fade',
     ACTIVE                : '.active',
     ACTIVE_CHILD          : '> .nav-item > .active, > .active',
@@ -78,26 +79,27 @@ const Tab = (($) => {
 
     show() {
       if (this._element.parentNode &&
-         (this._element.parentNode.nodeType === Node.ELEMENT_NODE) &&
-         ($(this._element).hasClass(ClassName.ACTIVE))) {
+          this._element.parentNode.nodeType === Node.ELEMENT_NODE &&
+          $(this._element).hasClass(ClassName.ACTIVE) ||
+          $(this._element).hasClass(ClassName.DISABLED)) {
         return
       }
 
       let target
       let previous
-      let ulElement = $(this._element).closest(Selector.UL)[0]
-      let selector  = Util.getSelectorFromElement(this._element)
+      const listElement = $(this._element).closest(Selector.LIST)[0]
+      const selector    = Util.getSelectorFromElement(this._element)
 
-      if (ulElement) {
-        previous = $.makeArray($(ulElement).find(Selector.ACTIVE))
+      if (listElement) {
+        previous = $.makeArray($(listElement).find(Selector.ACTIVE))
         previous = previous[previous.length - 1]
       }
 
-      let hideEvent = $.Event(Event.HIDE, {
+      const hideEvent = $.Event(Event.HIDE, {
         relatedTarget: this._element
       })
 
-      let showEvent = $.Event(Event.SHOW, {
+      const showEvent = $.Event(Event.SHOW, {
         relatedTarget: previous
       })
 
@@ -108,7 +110,7 @@ const Tab = (($) => {
       $(this._element).trigger(showEvent)
 
       if (showEvent.isDefaultPrevented() ||
-         (hideEvent.isDefaultPrevented())) {
+         hideEvent.isDefaultPrevented()) {
         return
       }
 
@@ -118,15 +120,15 @@ const Tab = (($) => {
 
       this._activate(
         this._element,
-        ulElement
+        listElement
       )
 
-      let complete = () => {
-        let hiddenEvent = $.Event(Event.HIDDEN, {
+      const complete = () => {
+        const hiddenEvent = $.Event(Event.HIDDEN, {
           relatedTarget: this._element
         })
 
-        let shownEvent  = $.Event(Event.SHOWN, {
+        const shownEvent = $.Event(Event.SHOWN, {
           relatedTarget: previous
         })
 
@@ -150,15 +152,13 @@ const Tab = (($) => {
     // private
 
     _activate(element, container, callback) {
-      let active          = $(container).find(Selector.ACTIVE_CHILD)[0]
-      let isTransitioning = callback
+      const active          = $(container).find(Selector.ACTIVE_CHILD)[0]
+      const isTransitioning = callback
         && Util.supportsTransitionEnd()
-        && ((active && $(active).hasClass(ClassName.FADE))
+        && (active && $(active).hasClass(ClassName.FADE)
            || Boolean($(container).find(Selector.FADE_CHILD)[0]))
 
-      let complete = $.proxy(
-        this._transitionComplete,
-        this,
+      const complete = () => this._transitionComplete(
         element,
         active,
         isTransitioning,
@@ -175,7 +175,7 @@ const Tab = (($) => {
       }
 
       if (active) {
-        $(active).removeClass(ClassName.IN)
+        $(active).removeClass(ClassName.SHOW)
       }
     }
 
@@ -183,7 +183,7 @@ const Tab = (($) => {
       if (active) {
         $(active).removeClass(ClassName.ACTIVE)
 
-        let dropdownChild = $(active).find(
+        const dropdownChild = $(active.parentNode).find(
           Selector.DROPDOWN_ACTIVE_CHILD
         )[0]
 
@@ -199,15 +199,15 @@ const Tab = (($) => {
 
       if (isTransitioning) {
         Util.reflow(element)
-        $(element).addClass(ClassName.IN)
+        $(element).addClass(ClassName.SHOW)
       } else {
         $(element).removeClass(ClassName.FADE)
       }
 
       if (element.parentNode &&
-         ($(element.parentNode).hasClass(ClassName.DROPDOWN_MENU))) {
+          $(element.parentNode).hasClass(ClassName.DROPDOWN_MENU)) {
 
-        let dropdownElement = $(element).closest(Selector.DROPDOWN)[0]
+        const dropdownElement = $(element).closest(Selector.DROPDOWN)[0]
         if (dropdownElement) {
           $(dropdownElement).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)
         }
@@ -225,11 +225,11 @@ const Tab = (($) => {
 
     static _jQueryInterface(config) {
       return this.each(function () {
-        let $this = $(this)
-        let data  = $this.data(DATA_KEY)
+        const $this = $(this)
+        let data    = $this.data(DATA_KEY)
 
         if (!data) {
-          data = data = new Tab(this)
+          data = new Tab(this)
           $this.data(DATA_KEY, data)
         }
 
diff --git a/js/src/tooltip.js b/js/src/tooltip.js
index e854b1bb4..0c1d381b9 100644
--- a/js/src/tooltip.js
+++ b/js/src/tooltip.js
@@ -5,7 +5,7 @@ import Util from './util'
 
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): tooltip.js
+ * Bootstrap (v4.0.0-alpha.5): tooltip.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -16,7 +16,7 @@ const Tooltip = (($) => {
    * Check for Tether dependency
    * Tether - http://tether.io/
    */
-  if (window.Tether === undefined) {
+  if (typeof Tether === 'undefined') {
     throw new Error('Bootstrap tooltips require Tether (http://tether.io/)')
   }
 
@@ -28,7 +28,7 @@ const Tooltip = (($) => {
    */
 
   const NAME                = 'tooltip'
-  const VERSION             = '4.0.0-alpha.4'
+  const VERSION             = '4.0.0-alpha.5'
   const DATA_KEY            = 'bs.tooltip'
   const EVENT_KEY           = `.${DATA_KEY}`
   const JQUERY_NO_CONFLICT  = $.fn[NAME]
@@ -46,7 +46,8 @@ const Tooltip = (($) => {
     selector    : false,
     placement   : 'top',
     offset      : '0 0',
-    constraints : []
+    constraints : [],
+    container   : false
   }
 
   const DefaultType = {
@@ -59,7 +60,8 @@ const Tooltip = (($) => {
     selector    : '(string|boolean)',
     placement   : '(string|function)',
     offset      : 'string',
-    constraints : 'array'
+    constraints : 'array',
+    container   : '(string|element|boolean)'
   }
 
   const AttachmentMap = {
@@ -70,8 +72,8 @@ const Tooltip = (($) => {
   }
 
   const HoverState = {
-    IN  : 'in',
-    OUT : 'out'
+    SHOW : 'show',
+    OUT  : 'out'
   }
 
   const Event = {
@@ -89,7 +91,7 @@ const Tooltip = (($) => {
 
   const ClassName = {
     FADE : 'fade',
-    IN   : 'in'
+    SHOW : 'show'
   }
 
   const Selector = {
@@ -121,11 +123,12 @@ const Tooltip = (($) => {
     constructor(element, config) {
 
       // private
-      this._isEnabled      = true
-      this._timeout        = 0
-      this._hoverState     = ''
-      this._activeTrigger  = {}
-      this._tether         = null
+      this._isEnabled        = true
+      this._timeout          = 0
+      this._hoverState       = ''
+      this._activeTrigger    = {}
+      this._isTransitioning  = false
+      this._tether           = null
 
       // protected
       this.element = element
@@ -184,7 +187,7 @@ const Tooltip = (($) => {
 
     toggle(event) {
       if (event) {
-        let dataKey = this.constructor.DATA_KEY
+        const dataKey = this.constructor.DATA_KEY
         let context = $(event.currentTarget).data(dataKey)
 
         if (!context) {
@@ -205,7 +208,7 @@ const Tooltip = (($) => {
 
       } else {
 
-        if ($(this.getTipElement()).hasClass(ClassName.IN)) {
+        if ($(this.getTipElement()).hasClass(ClassName.SHOW)) {
           this._leave(null, this)
           return
         }
@@ -222,16 +225,17 @@ const Tooltip = (($) => {
       $.removeData(this.element, this.constructor.DATA_KEY)
 
       $(this.element).off(this.constructor.EVENT_KEY)
+      $(this.element).closest('.modal').off('hide.bs.modal')
 
       if (this.tip) {
         $(this.tip).remove()
       }
 
-      this._isEnabled      = null
-      this._timeout        = null
-      this._hoverState     = null
-      this._activeTrigger  = null
-      this._tether         = null
+      this._isEnabled     = null
+      this._timeout       = null
+      this._hoverState    = null
+      this._activeTrigger = null
+      this._tether        = null
 
       this.element = null
       this.config  = null
@@ -239,12 +243,18 @@ const Tooltip = (($) => {
     }
 
     show() {
-      let showEvent = $.Event(this.constructor.Event.SHOW)
+      if ($(this.element).css('display') === 'none') {
+        throw new Error('Please use show on visible elements')
+      }
 
+      const showEvent = $.Event(this.constructor.Event.SHOW)
       if (this.isWithContent() && this._isEnabled) {
+        if (this._isTransitioning) {
+          throw new Error('Tooltip is transitioning')
+        }
         $(this.element).trigger(showEvent)
 
-        let isInTheDom = $.contains(
+        const isInTheDom = $.contains(
           this.element.ownerDocument.documentElement,
           this.element
         )
@@ -253,8 +263,8 @@ const Tooltip = (($) => {
           return
         }
 
-        let tip   = this.getTipElement()
-        let tipId = Util.getUID(this.constructor.NAME)
+        const tip   = this.getTipElement()
+        const tipId = Util.getUID(this.constructor.NAME)
 
         tip.setAttribute('id', tipId)
         this.element.setAttribute('aria-describedby', tipId)
@@ -265,15 +275,17 @@ const Tooltip = (($) => {
           $(tip).addClass(ClassName.FADE)
         }
 
-        let placement  = typeof this.config.placement === 'function' ?
+        const placement  = typeof this.config.placement === 'function' ?
           this.config.placement.call(this, tip, this.element) :
           this.config.placement
 
-        let attachment = this._getAttachment(placement)
+        const attachment = this._getAttachment(placement)
+
+        const container = this.config.container === false ? document.body : $(this.config.container)
 
         $(tip)
           .data(this.constructor.DATA_KEY, this)
-          .appendTo(document.body)
+          .appendTo(container)
 
         $(this.element).trigger(this.constructor.Event.INSERTED)
 
@@ -291,11 +303,12 @@ const Tooltip = (($) => {
         Util.reflow(tip)
         this._tether.position()
 
-        $(tip).addClass(ClassName.IN)
+        $(tip).addClass(ClassName.SHOW)
 
-        let complete = () => {
-          let prevHoverState = this._hoverState
+        const complete = () => {
+          const prevHoverState = this._hoverState
           this._hoverState   = null
+          this._isTransitioning = false
 
           $(this.element).trigger(this.constructor.Event.SHOWN)
 
@@ -305,6 +318,7 @@ const Tooltip = (($) => {
         }
 
         if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
+          this._isTransitioning = true
           $(this.tip)
             .one(Util.TRANSITION_END, complete)
             .emulateTransitionEnd(Tooltip._TRANSITION_DURATION)
@@ -316,15 +330,19 @@ const Tooltip = (($) => {
     }
 
     hide(callback) {
-      let tip       = this.getTipElement()
-      let hideEvent = $.Event(this.constructor.Event.HIDE)
-      let complete  = () => {
-        if (this._hoverState !== HoverState.IN && tip.parentNode) {
+      const tip       = this.getTipElement()
+      const hideEvent = $.Event(this.constructor.Event.HIDE)
+      if (this._isTransitioning) {
+        throw new Error('Tooltip is transitioning')
+      }
+      const complete  = () => {
+        if (this._hoverState !== HoverState.SHOW && tip.parentNode) {
           tip.parentNode.removeChild(tip)
         }
 
         this.element.removeAttribute('aria-describedby')
         $(this.element).trigger(this.constructor.Event.HIDDEN)
+        this._isTransitioning = false
         this.cleanupTether()
 
         if (callback) {
@@ -338,11 +356,15 @@ const Tooltip = (($) => {
         return
       }
 
-      $(tip).removeClass(ClassName.IN)
+      $(tip).removeClass(ClassName.SHOW)
 
-      if (Util.supportsTransitionEnd() &&
-         ($(this.tip).hasClass(ClassName.FADE))) {
+      this._activeTrigger[Trigger.CLICK] = false
+      this._activeTrigger[Trigger.FOCUS] = false
+      this._activeTrigger[Trigger.HOVER] = false
 
+      if (Util.supportsTransitionEnd() &&
+          $(this.tip).hasClass(ClassName.FADE)) {
+        this._isTransitioning = true
         $(tip)
           .one(Util.TRANSITION_END, complete)
           .emulateTransitionEnd(TRANSITION_DURATION)
@@ -362,23 +384,21 @@ const Tooltip = (($) => {
     }
 
     getTipElement() {
-      return (this.tip = this.tip || $(this.config.template)[0])
+      return this.tip = this.tip || $(this.config.template)[0]
     }
 
     setContent() {
-      let $tip = $(this.getTipElement())
+      const $tip = $(this.getTipElement())
 
       this.setElementContent($tip.find(Selector.TOOLTIP_INNER), this.getTitle())
 
-      $tip
-        .removeClass(ClassName.FADE)
-        .removeClass(ClassName.IN)
+      $tip.removeClass(`${ClassName.FADE} ${ClassName.SHOW}`)
 
       this.cleanupTether()
     }
 
     setElementContent($element, content) {
-      let html = this.config.html
+      const html = this.config.html
       if (typeof content === 'object' && (content.nodeType || content.jquery)) {
         // content is a DOM node or a jQuery
         if (html) {
@@ -419,21 +439,21 @@ const Tooltip = (($) => {
     }
 
     _setListeners() {
-      let triggers = this.config.trigger.split(' ')
+      const triggers = this.config.trigger.split(' ')
 
       triggers.forEach((trigger) => {
         if (trigger === 'click') {
           $(this.element).on(
             this.constructor.Event.CLICK,
             this.config.selector,
-            $.proxy(this.toggle, this)
+            (event) => this.toggle(event)
           )
 
         } else if (trigger !== Trigger.MANUAL) {
-          let eventIn  = trigger === Trigger.HOVER ?
+          const eventIn  = trigger === Trigger.HOVER ?
             this.constructor.Event.MOUSEENTER :
             this.constructor.Event.FOCUSIN
-          let eventOut = trigger === Trigger.HOVER ?
+          const eventOut = trigger === Trigger.HOVER ?
             this.constructor.Event.MOUSELEAVE :
             this.constructor.Event.FOCUSOUT
 
@@ -441,14 +461,19 @@ const Tooltip = (($) => {
             .on(
               eventIn,
               this.config.selector,
-              $.proxy(this._enter, this)
+              (event) => this._enter(event)
             )
             .on(
               eventOut,
               this.config.selector,
-              $.proxy(this._leave, this)
+              (event) => this._leave(event)
             )
         }
+
+        $(this.element).closest('.modal').on(
+          'hide.bs.modal',
+          () => this.hide()
+        )
       })
 
       if (this.config.selector) {
@@ -462,9 +487,9 @@ const Tooltip = (($) => {
     }
 
     _fixTitle() {
-      let titleType = typeof this.element.getAttribute('data-original-title')
+      const titleType = typeof this.element.getAttribute('data-original-title')
       if (this.element.getAttribute('title') ||
-         (titleType !== 'string')) {
+         titleType !== 'string') {
         this.element.setAttribute(
           'data-original-title',
           this.element.getAttribute('title') || ''
@@ -474,7 +499,7 @@ const Tooltip = (($) => {
     }
 
     _enter(event, context) {
-      let dataKey = this.constructor.DATA_KEY
+      const dataKey = this.constructor.DATA_KEY
 
       context = context || $(event.currentTarget).data(dataKey)
 
@@ -492,15 +517,15 @@ const Tooltip = (($) => {
         ] = true
       }
 
-      if ($(context.getTipElement()).hasClass(ClassName.IN) ||
-         (context._hoverState === HoverState.IN)) {
-        context._hoverState = HoverState.IN
+      if ($(context.getTipElement()).hasClass(ClassName.SHOW) ||
+         context._hoverState === HoverState.SHOW) {
+        context._hoverState = HoverState.SHOW
         return
       }
 
       clearTimeout(context._timeout)
 
-      context._hoverState = HoverState.IN
+      context._hoverState = HoverState.SHOW
 
       if (!context.config.delay || !context.config.delay.show) {
         context.show()
@@ -508,14 +533,14 @@ const Tooltip = (($) => {
       }
 
       context._timeout = setTimeout(() => {
-        if (context._hoverState === HoverState.IN) {
+        if (context._hoverState === HoverState.SHOW) {
           context.show()
         }
       }, context.config.delay.show)
     }
 
     _leave(event, context) {
-      let dataKey = this.constructor.DATA_KEY
+      const dataKey = this.constructor.DATA_KEY
 
       context = context || $(event.currentTarget).data(dataKey)
 
@@ -554,7 +579,7 @@ const Tooltip = (($) => {
     }
 
     _isWithActiveTrigger() {
-      for (let trigger in this._activeTrigger) {
+      for (const trigger in this._activeTrigger) {
         if (this._activeTrigger[trigger]) {
           return true
         }
@@ -588,10 +613,10 @@ const Tooltip = (($) => {
     }
 
     _getDelegateConfig() {
-      let config = {}
+      const config = {}
 
       if (this.config) {
-        for (let key in this.config) {
+        for (const key in this.config) {
           if (this.constructor.Default[key] !== this.config[key]) {
             config[key] = this.config[key]
           }
@@ -606,9 +631,8 @@ const Tooltip = (($) => {
 
     static _jQueryInterface(config) {
       return this.each(function () {
-        let data   = $(this).data(DATA_KEY)
-        let _config = typeof config === 'object' ?
-          config : null
+        let data      = $(this).data(DATA_KEY)
+        const _config = typeof config === 'object' && config
 
         if (!data && /dispose|hide/.test(config)) {
           return
diff --git a/js/src/util.js b/js/src/util.js
index d117dfcd5..06424fbfe 100644
--- a/js/src/util.js
+++ b/js/src/util.js
@@ -1,6 +1,6 @@
 /**
  * --------------------------------------------------------------------------
- * Bootstrap (v4.0.0-alpha.4): util.js
+ * Bootstrap (v4.0.0-alpha.5): util.js
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * --------------------------------------------------------------------------
  */
@@ -27,7 +27,7 @@ const Util = (($) => {
 
   // shoutout AngusCroll (https://goo.gl/pxwQGp)
   function toType(obj) {
-    return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase()
+    return {}.toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase()
   }
 
   function isElement(obj) {
@@ -52,11 +52,13 @@ const Util = (($) => {
       return false
     }
 
-    let el = document.createElement('bootstrap')
+    const el = document.createElement('bootstrap')
 
-    for (let name in TransitionEndEvent) {
+    for (const name in TransitionEndEvent) {
       if (el.style[name] !== undefined) {
-        return { end: TransitionEndEvent[name] }
+        return {
+          end: TransitionEndEvent[name]
+        }
       }
     }
 
@@ -96,15 +98,14 @@ const Util = (($) => {
    * --------------------------------------------------------------------------
    */
 
-  let Util = {
+  const Util = {
 
     TRANSITION_END: 'bsTransitionEnd',
 
     getUID(prefix) {
       do {
-        /* eslint-disable no-bitwise */
+        // eslint-disable-next-line no-bitwise
         prefix += ~~(Math.random() * MAX_UID) // "~~" acts like a faster Math.floor() here
-        /* eslint-enable no-bitwise */
       } while (document.getElementById(prefix))
       return prefix
     },
@@ -121,7 +122,7 @@ const Util = (($) => {
     },
 
     reflow(element) {
-      new Function('bs', 'return bs')(element.offsetHeight)
+      return element.offsetHeight
     },
 
     triggerTransitionEnd(element) {
@@ -133,17 +134,12 @@ const Util = (($) => {
     },
 
     typeCheckConfig(componentName, config, configTypes) {
-      for (let property in configTypes) {
+      for (const property in configTypes) {
         if (configTypes.hasOwnProperty(property)) {
-          let expectedTypes = configTypes[property]
-          let value         = config[property]
-          let valueType
-
-          if (value && isElement(value)) {
-            valueType = 'element'
-          } else {
-            valueType = toType(value)
-          }
+          const expectedTypes = configTypes[property]
+          const value         = config[property]
+          const valueType     = value && isElement(value) ?
+                                'element' : toType(value)
 
           if (!new RegExp(expectedTypes).test(valueType)) {
             throw new Error(
diff --git a/js/tests/.eslintrc.json b/js/tests/.eslintrc.json
new file mode 100644
index 000000000..7ae9cf966
--- /dev/null
+++ b/js/tests/.eslintrc.json
@@ -0,0 +1,40 @@
+{
+  "env": {
+    "qunit": true,
+    "es6": false
+  },
+  "globals": {
+    "Util": false
+  },
+  "parserOptions": {
+    "ecmaVersion": 5,
+    "sourceType": "script"
+  },
+  "rules": {
+    // Best Practices
+    "consistent-return": "off",
+    "no-alert": "off",
+    "no-console": "off",
+    "no-empty-function": "off",
+    "no-extend-native": "off",
+    "no-magic-numbers": "off",
+    "vars-on-top": "off",
+
+    // Strict Mode
+    "strict": "off",
+
+    // Stylistic Issues
+    "brace-style": "off",
+    "func-style": "off",
+    "max-statements-per-line": "off",
+    "object-curly-newline": "off",
+    "object-property-newline": "off",
+
+    // ECMAScript 6
+    "no-var": "off",
+    "object-shorthand": "off",
+    "prefer-arrow-callback": "off",
+    "prefer-template": "off",
+    "prefer-rest-params": "off"
+  }
+}
diff --git a/js/tests/unit/alert.js b/js/tests/unit/alert.js
index 97818960a..e078082c3 100644
--- a/js/tests/unit/alert.js
+++ b/js/tests/unit/alert.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('alert plugin')
 
@@ -34,7 +34,7 @@ $(function () {
 
   QUnit.test('should fade element out on clicking .close', function (assert) {
     assert.expect(1)
-    var alertHTML = '<div class="alert alert-danger fade in">'
+    var alertHTML = '<div class="alert alert-danger fade show">'
         + '<a class="close" href="#" data-dismiss="alert">×</a>'
         + '<p><strong>Holy guacamole!</strong> Best check yo self, you\'re not looking too good.</p>'
         + '</div>'
@@ -43,12 +43,12 @@ $(function () {
 
     $alert.find('.close').trigger('click')
 
-    assert.strictEqual($alert.hasClass('in'), false, 'remove .in class on .close click')
+    assert.strictEqual($alert.hasClass('show'), false, 'remove .show class on .close click')
   })
 
   QUnit.test('should remove element when clicking .close', function (assert) {
     assert.expect(2)
-    var alertHTML = '<div class="alert alert-danger fade in">'
+    var alertHTML = '<div class="alert alert-danger fade show">'
         + '<a class="close" href="#" data-dismiss="alert">×</a>'
         + '<p><strong>Holy guacamole!</strong> Best check yo self, you\'re not looking too good.</p>'
         + '</div>'
diff --git a/js/tests/unit/button.js b/js/tests/unit/button.js
index 5648506cf..d87b57610 100644
--- a/js/tests/unit/button.js
+++ b/js/tests/unit/button.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('button plugin')
 
@@ -72,6 +72,26 @@ $(function () {
     assert.strictEqual($btn.attr('aria-pressed'), 'true', 'btn aria-pressed state is true')
   })
 
+  QUnit.test('should trigger input change event when toggled button has input field', function (assert) {
+    assert.expect(1)
+    var done = assert.async()
+
+    var groupHTML = '<div class="btn-group" data-toggle="buttons">'
+      + '<label class="btn btn-primary">'
+      + '<input type="radio" id="radio" autocomplete="off">Radio'
+      + '</label>'
+      + '</div>'
+    var $group = $(groupHTML).appendTo('#qunit-fixture')
+
+    $group.find('input').on('change', function (e) {
+      e.preventDefault()
+      assert.ok(true, 'change event fired')
+      done()
+    })
+
+    $group.find('label').trigger('click')
+  })
+
   QUnit.test('should check for closest matching toggle', function (assert) {
     assert.expect(12)
     var groupHTML = '<div class="btn-group" data-toggle="buttons">'
diff --git a/js/tests/unit/carousel.js b/js/tests/unit/carousel.js
index d6d0186e1..dbdea921a 100644
--- a/js/tests/unit/carousel.js
+++ b/js/tests/unit/carousel.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('carousel plugin')
 
@@ -507,6 +507,37 @@ $(function () {
     assert.strictEqual($template.find('.carousel-item')[1], $template.find('.active')[0], 'second item active')
   })
 
+  QUnit.test('should not prevent keydown if key is not ARROW_LEFT or ARROW_RIGHT', function (assert) {
+    assert.expect(2)
+    var templateHTML = '<div id="myCarousel" class="carousel" data-interval="false">'
+        + '<div class="carousel-inner">'
+        + '<div id="first" class="carousel-item active">'
+        + '<img alt="">'
+        + '</div>'
+        + '</div>'
+        + '</div>'
+    var $template = $(templateHTML)
+
+    $template.bootstrapCarousel()
+    var done = assert.async()
+
+    var eventArrowDown = $.Event('keydown', { which: 40 })
+    var eventArrowUp   = $.Event('keydown', { which: 38 })
+
+    $template.one('keydown', function (event) {
+      assert.strictEqual(event.isDefaultPrevented(), false)
+    })
+
+    $template.trigger(eventArrowDown)
+
+    $template.one('keydown', function (event) {
+      assert.strictEqual(event.isDefaultPrevented(), false)
+      done()
+    })
+
+    $template.trigger(eventArrowUp)
+  })
+
   QUnit.test('should support disabling the keyboard navigation', function (assert) {
     assert.expect(3)
     var templateHTML = '<div id="myCarousel" class="carousel" data-interval="false" data-keyboard="false">'
@@ -759,4 +790,36 @@ $(function () {
       .bootstrapCarousel('prev')
     assert.strictEqual($carousel.find('.carousel-item.active').attr('id'), 'one', 'carousel did not wrap around and stayed on 1st slide')
   })
+
+  QUnit.test('should not prevent keydown for inputs and textareas', function (assert) {
+    assert.expect(2)
+    var templateHTML = '<div id="myCarousel" class="carousel" data-interval="false">'
+        + '<div class="carousel-inner">'
+          + '<div id="first" class="carousel-item">'
+            + '<input type="text" id="inputText" />'
+          + '</div>'
+          + '<div id="second" class="carousel-item active">'
+            + '<textarea id="txtArea"></textarea>'
+          + '</div>'
+        + '</div>'
+        + '</div>'
+    var $template = $(templateHTML)
+    var done = assert.async()
+    $template.appendTo('#qunit-fixture')
+    var $inputText = $template.find('#inputText')
+    var $textArea = $template.find('#txtArea')
+    $template.bootstrapCarousel()
+
+    var eventKeyDown = $.Event('keydown', { which: 65 }) // 65 for "a"
+    $inputText.on('keydown', function (event) {
+      assert.strictEqual(event.isDefaultPrevented(), false)
+    })
+    $inputText.trigger(eventKeyDown)
+
+    $textArea.on('keydown', function (event) {
+      assert.strictEqual(event.isDefaultPrevented(), false)
+      done()
+    })
+    $textArea.trigger(eventKeyDown)
+  })
 })
diff --git a/js/tests/unit/collapse.js b/js/tests/unit/collapse.js
index 892da52ed..713930433 100644
--- a/js/tests/unit/collapse.js
+++ b/js/tests/unit/collapse.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('collapse plugin')
 
@@ -48,15 +48,38 @@ $(function () {
     assert.expect(2)
     var $el = $('<div class="collapse"/>').bootstrapCollapse('show')
 
-    assert.ok($el.hasClass('in'), 'has class "in"')
+    assert.ok($el.hasClass('show'), 'has class "show"')
     assert.ok(!/height/i.test($el.attr('style')), 'has height reset')
   })
 
+  QUnit.test('should collapse only the first collapse', function (assert) {
+    assert.expect(2)
+    var html = [
+      '<div class="panel-group" id="accordion1">',
+      '<div class="panel">',
+      '<div id="collapse1" class="collapse"/>',
+      '</div>',
+      '</div>',
+      '<div class="panel-group" id="accordion2">',
+      '<div class="panel">',
+      '<div id="collapse2" class="collapse show"/>',
+      '</div>',
+      '</div>'
+    ].join('')
+    $(html).appendTo('#qunit-fixture')
+    var $el1 = $('#collapse1')
+    var $el2 = $('#collapse2')
+    $el1.bootstrapCollapse('show')
+
+    assert.ok($el1.hasClass('show'))
+    assert.ok($el2.hasClass('show'))
+  })
+
   QUnit.test('should hide a collapsed element', function (assert) {
     assert.expect(1)
     var $el = $('<div class="collapse"/>').bootstrapCollapse('hide')
 
-    assert.ok(!$el.hasClass('in'), 'does not have class "in"')
+    assert.ok(!$el.hasClass('show'), 'does not have class "show"')
   })
 
   QUnit.test('should not fire shown when show is prevented', function (assert) {
@@ -127,7 +150,7 @@ $(function () {
 
     var $target = $('<a role="button" data-toggle="collapse" href="#test1"/>').appendTo('#qunit-fixture')
 
-    $('<div id="test1" class="in"/>')
+    $('<div id="test1" class="show"/>')
       .appendTo('#qunit-fixture')
       .on('hidden.bs.collapse', function () {
         assert.ok($target.hasClass('collapsed'), 'target has collapsed class')
@@ -162,7 +185,7 @@ $(function () {
     var $target = $('<a role="button" data-toggle="collapse" href="#test1"/>').appendTo('#qunit-fixture')
     var $alt = $('<a role="button" data-toggle="collapse" href="#test1"/>').appendTo('#qunit-fixture')
 
-    $('<div id="test1" class="in"/>')
+    $('<div id="test1" class="show"/>')
       .appendTo('#qunit-fixture')
       .on('hidden.bs.collapse', function () {
         assert.ok($target.hasClass('collapsed'), 'target has collapsed class')
@@ -177,7 +200,7 @@ $(function () {
     assert.expect(0)
     var done = assert.async()
 
-    var $test = $('<div id="test1" class="in"/>')
+    var $test = $('<div id="test1" class="show"/>')
       .appendTo('#qunit-fixture')
       .on('hide.bs.collapse', function () {
         assert.ok(false)
@@ -221,7 +244,7 @@ $(function () {
     assert.expect(1)
     var done = assert.async()
 
-    $('<div class="collapse in"></div>')
+    $('<div class="collapse show"></div>')
       .appendTo('#qunit-fixture')
       .on('hide.bs.collapse', function () {
         assert.ok(true, 'hiding a previously-uninitialized shown collapse when the "hide" method is called')
@@ -244,7 +267,7 @@ $(function () {
 
     var $target1 = $('<a role="button" data-toggle="collapse" href="#body1" data-parent="#accordion"/>').appendTo($groups.eq(0))
 
-    $('<div id="body1" class="in"/>').appendTo($groups.eq(0))
+    $('<div id="body1" class="show"/>').appendTo($groups.eq(0))
 
     var $target2 = $('<a class="collapsed" data-toggle="collapse" role="button" href="#body2" data-parent="#accordion"/>').appendTo($groups.eq(1))
 
@@ -278,7 +301,7 @@ $(function () {
 
     var $target1 = $('<a role="button" data-toggle="collapse" href="#body1" data-parent=".accordion"/>').appendTo($groups.eq(0))
 
-    $('<div id="body1" class="in"/>').appendTo($groups.eq(0))
+    $('<div id="body1" class="show"/>').appendTo($groups.eq(0))
 
     var $target2 = $('<a class="collapsed" data-toggle="collapse" role="button" href="#body2" data-parent=".accordion"/>').appendTo($groups.eq(1))
 
@@ -321,7 +344,7 @@ $(function () {
 
     var $target = $('<a role="button" data-toggle="collapse" href="#test1" aria-expanded="true"/>').appendTo('#qunit-fixture')
 
-    $('<div id="test1" class="in"/>')
+    $('<div id="test1" class="show"/>')
       .appendTo('#qunit-fixture')
       .on('hidden.bs.collapse', function () {
         assert.strictEqual($target.attr('aria-expanded'), 'false', 'aria-expanded on target is "false"')
@@ -356,7 +379,7 @@ $(function () {
     var $target = $('<a role="button" data-toggle="collapse" href="#test1" aria-expanded="true"/>').appendTo('#qunit-fixture')
     var $alt = $('<a role="button" data-toggle="collapse" href="#test1" aria-expanded="true"/>').appendTo('#qunit-fixture')
 
-    $('<div id="test1" class="in"/>')
+    $('<div id="test1" class="show"/>')
       .appendTo('#qunit-fixture')
       .on('hidden.bs.collapse', function () {
         assert.strictEqual($target.attr('aria-expanded'), 'false', 'aria-expanded on target is "false"')
@@ -380,7 +403,7 @@ $(function () {
 
     var $target1 = $('<a role="button" data-toggle="collapse" href="#body1" data-parent="#accordion"/>').appendTo($groups.eq(0))
 
-    $('<div id="body1" aria-expanded="true" class="in"/>').appendTo($groups.eq(0))
+    $('<div id="body1" aria-expanded="true" class="show"/>').appendTo($groups.eq(0))
 
     var $target2 = $('<a role="button" data-toggle="collapse" href="#body2" data-parent="#accordion" class="collapsed" />').appendTo($groups.eq(1))
 
@@ -426,7 +449,7 @@ $(function () {
     $target2.trigger('click')
 
     $body2
-      .toggleClass('in collapsing')
+      .toggleClass('show collapsing')
       .data('bs.collapse')._isTransitioning = 1
 
     $target1.trigger('click')
@@ -443,7 +466,7 @@ $(function () {
 
     var $target = $('<a role="button" data-toggle="collapse" href="#test1"/>').appendTo('#qunit-fixture')
 
-    $('<div id="test1" class="in"/>')
+    $('<div id="test1" class="show"/>')
       .appendTo('#qunit-fixture')
       .on('hidden.bs.collapse', function () {
         assert.ok($target.hasClass('collapsed'))
diff --git a/js/tests/unit/dropdown.js b/js/tests/unit/dropdown.js
index e6cda58d4..53455c2a6 100644
--- a/js/tests/unit/dropdown.js
+++ b/js/tests/unit/dropdown.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('dropdowns plugin')
 
@@ -59,7 +59,7 @@ $(function () {
         + '</ul>'
     var $dropdown = $(dropdownHTML).find('[data-toggle="dropdown"]').bootstrapDropdown().trigger('click')
 
-    assert.ok(!$dropdown.parent('.dropdown').hasClass('open'), '"open" class added on click')
+    assert.ok(!$dropdown.parent('.dropdown').hasClass('show'), '"show" class added on click')
   })
 
   QUnit.test('should set aria-expanded="true" on target when dropdown menu is shown', function (assert) {
@@ -128,10 +128,10 @@ $(function () {
         + '</ul>'
     var $dropdown = $(dropdownHTML).find('[data-toggle="dropdown"]').bootstrapDropdown().trigger('click')
 
-    assert.ok(!$dropdown.parent('.dropdown').hasClass('open'), '"open" class added on click')
+    assert.ok(!$dropdown.parent('.dropdown').hasClass('show'), '"show" class added on click')
   })
 
-  QUnit.test('should add class open to menu if clicked', function (assert) {
+  QUnit.test('should add class show to menu if clicked', function (assert) {
     assert.expect(1)
     var dropdownHTML = '<ul class="tabs">'
         + '<li class="dropdown">'
@@ -146,7 +146,7 @@ $(function () {
         + '</ul>'
     var $dropdown = $(dropdownHTML).find('[data-toggle="dropdown"]').bootstrapDropdown().trigger('click')
 
-    assert.ok($dropdown.parent('.dropdown').hasClass('open'), '"open" class added on click')
+    assert.ok($dropdown.parent('.dropdown').hasClass('show'), '"show" class added on click')
   })
 
   QUnit.test('should test if element has a # before assuming it\'s a selector', function (assert) {
@@ -164,11 +164,11 @@ $(function () {
         + '</ul>'
     var $dropdown = $(dropdownHTML).find('[data-toggle="dropdown"]').bootstrapDropdown().trigger('click')
 
-    assert.ok($dropdown.parent('.dropdown').hasClass('open'), '"open" class added on click')
+    assert.ok($dropdown.parent('.dropdown').hasClass('show'), '"show" class added on click')
   })
 
 
-  QUnit.test('should remove "open" class if body is clicked', function (assert) {
+  QUnit.test('should remove "show" class if body is clicked', function (assert) {
     assert.expect(2)
     var dropdownHTML = '<ul class="tabs">'
         + '<li class="dropdown">'
@@ -187,12 +187,12 @@ $(function () {
       .bootstrapDropdown()
       .trigger('click')
 
-    assert.ok($dropdown.parent('.dropdown').hasClass('open'), '"open" class added on click')
+    assert.ok($dropdown.parent('.dropdown').hasClass('show'), '"show" class added on click')
     $(document.body).trigger('click')
-    assert.ok(!$dropdown.parent('.dropdown').hasClass('open'), '"open" class removed')
+    assert.ok(!$dropdown.parent('.dropdown').hasClass('show'), '"show" class removed')
   })
 
-  QUnit.test('should remove "open" class if body is clicked, with multiple dropdowns', function (assert) {
+  QUnit.test('should remove "show" class if body is clicked, with multiple dropdowns', function (assert) {
     assert.expect(7)
     var dropdownHTML = '<ul class="nav">'
         + '<li><a href="#menu1">Menu 1</a></li>'
@@ -217,16 +217,16 @@ $(function () {
     assert.strictEqual($dropdowns.length, 2, 'two dropdowns')
 
     $first.trigger('click')
-    assert.strictEqual($first.parents('.open').length, 1, '"open" class added on click')
-    assert.strictEqual($('#qunit-fixture .open').length, 1, 'only one dropdown is open')
+    assert.strictEqual($first.parents('.show').length, 1, '"show" class added on click')
+    assert.strictEqual($('#qunit-fixture .show').length, 1, 'only one dropdown is shown')
     $(document.body).trigger('click')
-    assert.strictEqual($('#qunit-fixture .open').length, 0, '"open" class removed')
+    assert.strictEqual($('#qunit-fixture .show').length, 0, '"show" class removed')
 
     $last.trigger('click')
-    assert.strictEqual($last.parent('.open').length, 1, '"open" class added on click')
-    assert.strictEqual($('#qunit-fixture .open').length, 1, 'only one dropdown is open')
+    assert.strictEqual($last.parent('.show').length, 1, '"show" class added on click')
+    assert.strictEqual($('#qunit-fixture .show').length, 1, 'only one dropdown is shown')
     $(document.body).trigger('click')
-    assert.strictEqual($('#qunit-fixture .open').length, 0, '"open" class removed')
+    assert.strictEqual($('#qunit-fixture .show').length, 0, '"show" class removed')
   })
 
   QUnit.test('should fire show and hide event', function (assert) {
@@ -411,7 +411,7 @@ $(function () {
 
     $('#textField').trigger('click')
 
-    assert.ok($dropdown.parent('.btn-group').hasClass('open'), 'dropdown menu is open')
+    assert.ok($dropdown.parent('.btn-group').hasClass('show'), 'dropdown menu is shown')
   })
 
   QUnit.test('should not close the dropdown if the user clicks on a textarea', function (assert) {
@@ -430,6 +430,6 @@ $(function () {
 
     $('#textArea').trigger('click')
 
-    assert.ok($dropdown.parent('.btn-group').hasClass('open'), 'dropdown menu is open')
+    assert.ok($dropdown.parent('.btn-group').hasClass('show'), 'dropdown menu is shown')
   })
 })
diff --git a/js/tests/unit/modal.js b/js/tests/unit/modal.js
index 28c1e0ec7..7af5aeb27 100644
--- a/js/tests/unit/modal.js
+++ b/js/tests/unit/modal.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('modal plugin')
 
@@ -174,6 +174,19 @@ $(function () {
       .bootstrapModal('show')
   })
 
+  QUnit.test('should not close modal when clicking outside of modal-content if data-backdrop="true"', function (assert) {
+    assert.expect(1)
+    var done = assert.async()
+
+    $('<div id="modal-test" data-backdrop="false"><div class="contents"/></div>')
+      .on('shown.bs.modal', function () {
+        $('#modal-test').trigger('click')
+        assert.ok($('#modal-test').is(':visible'), 'modal not hidden')
+        done()
+      })
+      .bootstrapModal('show')
+  })
+
   QUnit.test('should close modal when escape key is pressed via keydown', function (assert) {
     assert.expect(3)
     var done = assert.async()
@@ -363,6 +376,44 @@ $(function () {
       .bootstrapModal('show')
   })
 
+  QUnit.test('should have a paddingRight when the modal is taller than the viewport', function (assert) {
+    assert.expect(2)
+    var done = assert.async()
+    $('<div class="navbar-fixed-top navbar-fixed-bottom is-fixed">@Johann-S</div>').appendTo('#qunit-fixture')
+    $('.navbar-fixed-top, .navbar-fixed-bottom, .is-fixed').css('padding-right', '10px')
+
+    $('<div id="modal-test"/>')
+      .on('shown.bs.modal', function () {
+        var paddingRight = parseInt($(document.body).css('padding-right'), 10)
+        assert.strictEqual(isNaN(paddingRight), false)
+        assert.strictEqual(paddingRight !== 0, true)
+        $(document.body).css('padding-right', '') // Because test case "should ignore other inline styles when trying to restore body padding after closing" fail if not
+        done()
+      })
+      .bootstrapModal('show')
+  })
+
+  QUnit.test('should remove padding-right on modal after closing', function (assert) {
+    assert.expect(3)
+    var done = assert.async()
+    $('<div class="navbar-fixed-top navbar-fixed-bottom is-fixed">@Johann-S</div>').appendTo('#qunit-fixture')
+    $('.navbar-fixed-top, .navbar-fixed-bottom, .is-fixed').css('padding-right', '10px')
+
+    $('<div id="modal-test"/>')
+      .on('shown.bs.modal', function () {
+        var paddingRight = parseInt($(document.body).css('padding-right'), 10)
+        assert.strictEqual(isNaN(paddingRight), false)
+        assert.strictEqual(paddingRight !== 0, true)
+        $(this).bootstrapModal('hide')
+      })
+      .on('hidden.bs.modal', function () {
+        var paddingRight = parseInt($(document.body).css('padding-right'), 10)
+        assert.strictEqual(paddingRight, 0)
+        done()
+      })
+      .bootstrapModal('show')
+  })
+
   QUnit.test('should ignore other inline styles when trying to restore body padding after closing', function (assert) {
     assert.expect(2)
     var done = assert.async()
@@ -403,4 +454,26 @@ $(function () {
       })
       .bootstrapModal('show')
   })
+
+  QUnit.test('should not follow link in area tag', function (assert) {
+    assert.expect(2)
+    var done = assert.async()
+
+    $('<map><area id="test" shape="default" data-toggle="modal" data-target="#modal-test" href="demo.html"/></map>')
+      .appendTo('#qunit-fixture')
+
+    $('<div id="modal-test"><div class="contents"><div id="close" data-dismiss="modal"/></div></div>')
+      .appendTo('#qunit-fixture')
+
+    $('#test')
+      .on('click.bs.modal.data-api', function (event) {
+        assert.notOk(event.isDefaultPrevented(), 'navigating to href will happen')
+
+        setTimeout(function () {
+          assert.ok(event.isDefaultPrevented(), 'model shown instead of navigating to href')
+          done()
+        }, 1)
+      })
+      .trigger('click')
+  })
 })
diff --git a/js/tests/unit/phantom.js b/js/tests/unit/phantom.js
index 525aea002..eea7486a4 100644
--- a/js/tests/unit/phantom.js
+++ b/js/tests/unit/phantom.js
@@ -7,7 +7,7 @@
  */
 
 (function () {
-  'use strict';
+  'use strict'
 
   // Don't re-order tests.
   QUnit.config.reorder = false
@@ -70,32 +70,3 @@
   })
 
 }())
-
-
-// bind polyfill
-// shoutout mdn: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind#Polyfill
-
-if (!Function.prototype.bind) {
-  Function.prototype.bind = function (oThis) {
-    if (typeof this !== 'function') {
-      // closest thing possible to the ECMAScript 5
-      // internal IsCallable function
-      throw new TypeError('Function.prototype.bind - what is trying to be bound is not callable');
-    }
-
-    var aArgs   = Array.prototype.slice.call(arguments, 1)
-    var fToBind = this
-    var FNOP    = function () {}
-    var fBound  = function () {
-      return fToBind.apply(this instanceof FNOP ? this : oThis, aArgs.concat(Array.prototype.slice.call(arguments)))
-    }
-
-    if (this.prototype) {
-      // native functions don't have a prototype
-      FNOP.prototype = this.prototype
-    }
-    fBound.prototype = new FNOP()
-
-    return fBound
-  }
-}
diff --git a/js/tests/unit/popover.js b/js/tests/unit/popover.js
index fcd7791d2..5452def58 100644
--- a/js/tests/unit/popover.js
+++ b/js/tests/unit/popover.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('popover plugin')
 
@@ -229,7 +229,7 @@ $(function () {
     $popover.bootstrapPopover('show')
     $popover.bootstrapPopover('dispose')
 
-    assert.ok(!$popover.hasClass('in'), 'popover is hidden')
+    assert.ok(!$popover.hasClass('show'), 'popover is hidden')
     assert.ok(!$popover.data('popover'), 'popover does not have data')
     assert.strictEqual($._data($popover[0], 'events').click[0].namespace, 'foo', 'popover still has click.foo')
     assert.ok(!$._data($popover[0], 'events').mouseover && !$._data($popover[0], 'events').mouseout, 'popover does not have any events')
@@ -320,4 +320,16 @@ $(function () {
       .bootstrapPopover('show')
   })
 
+  QUnit.test('should throw an error when show is called on hidden elements', function (assert) {
+    assert.expect(1)
+    var done = assert.async()
+
+    try {
+      $('<div data-toggle="popover" data-title="some title" data-content="@Johann-S" style="display: none"/>').bootstrapPopover('show')
+    }
+    catch (err) {
+      assert.strictEqual(err.message, 'Please use show on visible elements')
+      done()
+    }
+  })
 })
diff --git a/js/tests/unit/scrollspy.js b/js/tests/unit/scrollspy.js
index 97ddd16ec..877ec67a2 100644
--- a/js/tests/unit/scrollspy.js
+++ b/js/tests/unit/scrollspy.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('scrollspy plugin')
 
@@ -231,8 +231,8 @@ $(function () {
       .appendTo('#qunit-fixture')
       .bootstrapScrollspy({ offset: 0, target: '#navigation' })
 
-    !function testActiveElements() {
-      if (++times > 3) return done()
+    function testActiveElements() {
+      if (++times > 3) { return done() }
 
       $content.one('scroll', function () {
         assert.ok($('#a-1').hasClass('active'), 'nav item for outer element has "active" class')
@@ -241,7 +241,9 @@ $(function () {
       })
 
       $content.scrollTop($content.scrollTop() + 10)
-    }()
+    }
+
+    testActiveElements()
   })
 
   QUnit.test('should clear selection if above the first section', function (assert) {
@@ -285,6 +287,50 @@ $(function () {
       .scrollTop(201)
   })
 
+  QUnit.test('should NOT clear selection if above the first section and first section is at the top', function (assert) {
+    assert.expect(4)
+    var done = assert.async()
+
+    var sectionHTML = '<div id="header" style="height: 500px;"></div>'
+        + '<nav id="navigation" class="navbar">'
+        + '<ul class="nav navbar-nav">'
+        + '<li><a id="one-link"   class="nav-link active" href="#one">One</a></li>'
+        + '<li><a id="two-link"   class="nav-link" href="#two">Two</a></li>'
+        + '<li><a id="three-link" class="nav-link" href="#three">Three</a></li>'
+        + '</ul>'
+        + '</nav>'
+    $(sectionHTML).appendTo('#qunit-fixture')
+
+    var negativeHeight = -10
+    var startOfSectionTwo = 101
+
+    var scrollspyHTML = '<div id="content" style="height: 200px; overflow-y: auto;">'
+        + '<div id="one" style="height: 100px;"/>'
+        + '<div id="two" style="height: 100px;"/>'
+        + '<div id="three" style="height: 100px;"/>'
+        + '<div id="spacer" style="height: 100px;"/>'
+        + '</div>'
+    var $scrollspy = $(scrollspyHTML).appendTo('#qunit-fixture')
+
+    $scrollspy
+      .bootstrapScrollspy({
+        target: '#navigation',
+        offset: $scrollspy.position().top
+      })
+      .one('scroll', function () {
+        assert.strictEqual($('.active').length, 1, '"active" class on only one element present')
+        assert.strictEqual($('.active').is('#two-link'), true, '"active" class on second section')
+        $scrollspy
+          .one('scroll', function () {
+            assert.strictEqual($('.active').length, 1, '"active" class on only one element present')
+            assert.strictEqual($('.active').is('#one-link'), true, '"active" class on first section')
+            done()
+          })
+          .scrollTop(negativeHeight)
+      })
+      .scrollTop(startOfSectionTwo)
+  })
+
   QUnit.test('should correctly select navigation element on backward scrolling when each target section height is 100%', function (assert) {
     assert.expect(5)
     var navbarHtml =
@@ -399,8 +445,8 @@ $(function () {
       $navbar.appendTo('#qunit-fixture')
       $content.appendTo('#qunit-fixture')
 
-      if (type === 'js') $content.bootstrapScrollspy({ target: '.navbar', offset: 0, method: 'position' })
-      else if (type === 'data') $(window).trigger('load')
+      if (type === 'js') { $content.bootstrapScrollspy({ target: '.navbar', offset: 0, method: 'position' }) }
+      else if (type === 'data') { $(window).trigger('load') }
 
       var $target = $('#div-' + type + 'm-2')
       var scrollspy = $content.data('bs.scrollspy')
diff --git a/js/tests/unit/tab.js b/js/tests/unit/tab.js
index 2e0143293..62eece896 100644
--- a/js/tests/unit/tab.js
+++ b/js/tests/unit/tab.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('tabs plugin')
 
@@ -76,6 +76,22 @@ $(function () {
     assert.strictEqual($('#qunit-fixture').find('.active').attr('id'), 'home')
   })
 
+  QUnit.test('should activate element by tab id in ordered list', function (assert) {
+    assert.expect(2)
+    var pillsHTML = '<ol class="pills">'
+        + '<li><a href="#home">Home</a></li>'
+        + '<li><a href="#profile">Profile</a></li>'
+        + '</ol>'
+
+    $('<ol><li id="home"/><li id="profile"/></ol>').appendTo('#qunit-fixture')
+
+    $(pillsHTML).find('li:last a').bootstrapTab('show')
+    assert.strictEqual($('#qunit-fixture').find('.active').attr('id'), 'profile')
+
+    $(pillsHTML).find('li:first a').bootstrapTab('show')
+    assert.strictEqual($('#qunit-fixture').find('.active').attr('id'), 'home')
+  })
+
   QUnit.test('should not fire shown when show is prevented', function (assert) {
     assert.expect(1)
     var done = assert.async()
@@ -92,6 +108,44 @@ $(function () {
       .bootstrapTab('show')
   })
 
+  QUnit.test('should not fire shown when tab is already active', function (assert) {
+    assert.expect(0)
+    var tabsHTML = '<ul class="nav nav-tabs" role="tablist">'
+      + '<li class="nav-item"><a href="#home" class="nav-link active" role="tab">Home</a></li>'
+      + '<li class="nav-item"><a href="#profile" class="nav-link" role="tab">Profile</a></li>'
+      + '</ul>'
+      + '<div class="tab-content">'
+      + '<div class="tab-pane active" id="home" role="tabpanel"></div>'
+      + '<div class="tab-pane" id="profile" role="tabpanel"></div>'
+      + '</div>'
+
+    $(tabsHTML)
+      .find('a.active')
+      .on('shown.bs.tab', function () {
+        assert.ok(true, 'shown event fired')
+      })
+      .bootstrapTab('show')
+  })
+
+  QUnit.test('should not fire shown when tab is disabled', function (assert) {
+    assert.expect(0)
+    var tabsHTML = '<ul class="nav nav-tabs" role="tablist">'
+      + '<li class="nav-item"><a href="#home" class="nav-link active" role="tab">Home</a></li>'
+      + '<li class="nav-item"><a href="#profile" class="nav-link disabled" role="tab">Profile</a></li>'
+      + '</ul>'
+      + '<div class="tab-content">'
+      + '<div class="tab-pane active" id="home" role="tabpanel"></div>'
+      + '<div class="tab-pane" id="profile" role="tabpanel"></div>'
+      + '</div>'
+
+    $(tabsHTML)
+      .find('a.disabled')
+      .on('shown.bs.tab', function () {
+        assert.ok(true, 'shown event fired')
+      })
+      .bootstrapTab('show')
+  })
+
   QUnit.test('show and shown events should reference correct relatedTarget', function (assert) {
     assert.expect(2)
     var done = assert.async()
@@ -225,4 +279,36 @@ $(function () {
     assert.strictEqual($tabs.find('a:not(.active)').attr('aria-expanded'), 'false', 'after second show event, hidden tab has aria-expanded = false')
   })
 
+  QUnit.test('selected tab should deactivate previous selected tab', function (assert) {
+    assert.expect(2)
+    var tabsHTML = '<ul class="nav nav-tabs">'
+        + '<li class="nav-item"><a class="nav-link active" href="#home" data-toggle="tab">Home</a></li>'
+        + '<li class="nav-item"><a class="nav-link" href="#profile" data-toggle="tab">Profile</a></li>'
+        + '</ul>'
+    var $tabs = $(tabsHTML).appendTo('#qunit-fixture')
+
+    $tabs.find('li:last a').trigger('click')
+    assert.notOk($tabs.find('li:first a').hasClass('active'))
+    assert.ok($tabs.find('li:last a').hasClass('active'))
+  })
+
+  QUnit.test('selected tab should deactivate previous selected link in dropdown', function (assert) {
+    assert.expect(3)
+    var tabsHTML = '<ul class="nav nav-tabs">'
+        + '<li class="nav-item"><a class="nav-link" href="#home" data-toggle="tab">Home</a></li>'
+        + '<li class="nav-item"><a class="nav-link" href="#profile" data-toggle="tab">Profile</a></li>'
+        + '<li class="nav-item dropdown"><a class="nav-link dropdown-toggle active" data-toggle="dropdown" href="#">Dropdown</a>'
+        + '<div class="dropdown-menu">'
+        + '<a class="dropdown-item active" href="#dropdown1" id="dropdown1-tab" data-toggle="tab">@fat</a>'
+        + '<a class="dropdown-item" href="#dropdown2" id="dropdown2-tab" data-toggle="tab">@mdo</a>'
+        + '</div>'
+        + '</li>'
+        + '</ul>'
+    var $tabs = $(tabsHTML).appendTo('#qunit-fixture')
+
+    $tabs.find('li:first > a').trigger('click')
+    assert.ok($tabs.find('li:first a').hasClass('active'))
+    assert.notOk($tabs.find('li:last > a').hasClass('active'))
+    assert.notOk($tabs.find('li:last > .dropdown-menu > a:first').hasClass('active'))
+  })
 })
diff --git a/js/tests/unit/tooltip.js b/js/tests/unit/tooltip.js
index 6cf870551..7ff967fab 100644
--- a/js/tests/unit/tooltip.js
+++ b/js/tests/unit/tooltip.js
@@ -1,5 +1,5 @@
 $(function () {
-  'use strict';
+  'use strict'
 
   QUnit.module('tooltip plugin')
 
@@ -111,7 +111,7 @@ $(function () {
 
     assert
       .ok($('.tooltip')
-      .is('.fade.bs-tether-element-attached-top.bs-tether-element-attached-center.in'), 'has correct classes applied')
+      .is('.fade.bs-tether-element-attached-top.bs-tether-element-attached-center.show'), 'has correct classes applied')
 
     $tooltip.bootstrapTooltip('hide')
 
@@ -185,6 +185,19 @@ $(function () {
       .bootstrapTooltip('show')
   })
 
+  QUnit.test('should throw an error when show is called on hidden elements', function (assert) {
+    assert.expect(1)
+    var done = assert.async()
+
+    try {
+      $('<div title="tooltip title" style="display: none"/>').bootstrapTooltip('show')
+    }
+    catch (err) {
+      assert.strictEqual(err.message, 'Please use show on visible elements')
+      done()
+    }
+  })
+
   QUnit.test('should fire inserted event', function (assert) {
     assert.expect(2)
     var done = assert.async()
@@ -293,7 +306,7 @@ $(function () {
     $tooltip.bootstrapTooltip('show')
     $tooltip.bootstrapTooltip('dispose')
 
-    assert.ok(!$tooltip.hasClass('in'), 'tooltip is hidden')
+    assert.ok(!$tooltip.hasClass('show'), 'tooltip is hidden')
     assert.ok(!$._data($tooltip[0], 'bs.tooltip'), 'tooltip does not have data')
     assert.strictEqual($._data($tooltip[0], 'events').click[0].namespace, 'foo', 'tooltip still has click.foo')
     assert.ok(!$._data($tooltip[0], 'events').mouseover && !$._data($tooltip[0], 'events').mouseout, 'tooltip does not have hover events')
@@ -322,7 +335,7 @@ $(function () {
       .bootstrapTooltip({ trigger: 'manual' })
       .bootstrapTooltip('toggle')
 
-    assert.ok($('.tooltip').is('.fade.in'), 'tooltip is faded in')
+    assert.ok($('.tooltip').is('.fade.show'), 'tooltip is faded active')
   })
 
   QUnit.test('should hide previously shown tooltip when toggle is called on tooltip', function (assert) {
@@ -333,7 +346,7 @@ $(function () {
       .bootstrapTooltip('show')
 
     $('.tooltip').bootstrapTooltip('toggle')
-    assert.ok($('.tooltip').not('.fade.in'), 'tooltip was faded out')
+    assert.ok($('.tooltip').not('.fade.show'), 'tooltip was faded out')
   })
 
   QUnit.test('should place tooltips inside body when container is body', function (assert) {
@@ -369,7 +382,7 @@ $(function () {
     var $tooltip = $($target.data('bs.tooltip').tip)
 
     // this is some dumb hack stuff because sub pixels in firefox
-    var top = Math.round($target.offset().top + ($target[0].offsetHeight / 2) - ($tooltip[0].offsetHeight / 2))
+    var top = Math.round($target.offset().top + $target[0].offsetHeight / 2 - $tooltip[0].offsetHeight / 2)
     var top2 = Math.round($tooltip.offset().top)
     var topDiff = top - top2
     assert.ok(topDiff <= 1 && topDiff >= -1)
@@ -489,11 +502,11 @@ $(function () {
       .bootstrapTooltip({ delay: 150 })
 
     setTimeout(function () {
-      assert.ok(!$('.tooltip').is('.fade.in'), '100ms: tooltip is not faded in')
+      assert.ok(!$('.tooltip').is('.fade.show'), '100ms: tooltip is not faded active')
     }, 100)
 
     setTimeout(function () {
-      assert.ok($('.tooltip').is('.fade.in'), '200ms: tooltip is faded in')
+      assert.ok($('.tooltip').is('.fade.show'), '200ms: tooltip is faded active')
       done()
     }, 200)
 
@@ -509,12 +522,12 @@ $(function () {
       .bootstrapTooltip({ delay: 150 })
 
     setTimeout(function () {
-      assert.ok(!$('.tooltip').is('.fade.in'), '100ms: tooltip not faded in')
+      assert.ok(!$('.tooltip').is('.fade.show'), '100ms: tooltip not faded active')
       $tooltip.trigger('mouseout')
     }, 100)
 
     setTimeout(function () {
-      assert.ok(!$('.tooltip').is('.fade.in'), '200ms: tooltip not faded in')
+      assert.ok(!$('.tooltip').is('.fade.show'), '200ms: tooltip not faded active')
       done()
     }, 200)
 
@@ -527,19 +540,19 @@ $(function () {
 
     var $tooltip = $('<a href="#" rel="tooltip" title="Another tooltip"/>')
       .appendTo('#qunit-fixture')
-      .bootstrapTooltip({ delay: { show: 0, hide: 150 }})
+      .bootstrapTooltip({ delay: { show: 0, hide: 150 } })
 
     setTimeout(function () {
-      assert.ok($('.tooltip').is('.fade.in'), '1ms: tooltip faded in')
+      assert.ok($('.tooltip').is('.fade.show'), '1ms: tooltip faded active')
       $tooltip.trigger('mouseout')
 
       setTimeout(function () {
-        assert.ok($('.tooltip').is('.fade.in'), '100ms: tooltip still faded in')
+        assert.ok($('.tooltip').is('.fade.show'), '100ms: tooltip still faded active')
         $tooltip.trigger('mouseenter')
       }, 100)
 
       setTimeout(function () {
-        assert.ok($('.tooltip').is('.fade.in'), '200ms: tooltip still faded in')
+        assert.ok($('.tooltip').is('.fade.show'), '200ms: tooltip still faded active')
         done()
       }, 200)
     }, 0)
@@ -556,12 +569,12 @@ $(function () {
       .bootstrapTooltip({ delay: 150 })
 
     setTimeout(function () {
-      assert.ok(!$('.tooltip').is('.fade.in'), '100ms: tooltip not faded in')
+      assert.ok(!$('.tooltip').is('.fade.show'), '100ms: tooltip not faded active')
       $tooltip.trigger('mouseout')
     }, 100)
 
     setTimeout(function () {
-      assert.ok(!$('.tooltip').is('.fade.in'), '200ms: tooltip not faded in')
+      assert.ok(!$('.tooltip').is('.fade.show'), '200ms: tooltip not faded active')
       done()
     }, 200)
 
@@ -574,15 +587,15 @@ $(function () {
 
     var $tooltip = $('<a href="#" rel="tooltip" title="Another tooltip"/>')
       .appendTo('#qunit-fixture')
-      .bootstrapTooltip({ delay: { show: 150, hide: 0 }})
+      .bootstrapTooltip({ delay: { show: 150, hide: 0 } })
 
     setTimeout(function () {
-      assert.ok(!$('.tooltip').is('.fade.in'), '100ms: tooltip not faded in')
+      assert.ok(!$('.tooltip').is('.fade.show'), '100ms: tooltip not faded active')
       $tooltip.trigger('mouseout')
     }, 100)
 
     setTimeout(function () {
-      assert.ok(!$('.tooltip').is('.fade.in'), '250ms: tooltip not faded in')
+      assert.ok(!$('.tooltip').is('.fade.show'), '250ms: tooltip not faded active')
       done()
     }, 250)
 
@@ -595,19 +608,19 @@ $(function () {
 
     var $tooltip = $('<a href="#" rel="tooltip" title="Another tooltip"/>')
       .appendTo('#qunit-fixture')
-      .bootstrapTooltip({ delay: { show: 0, hide: 150 }})
+      .bootstrapTooltip({ delay: { show: 0, hide: 150 } })
 
     setTimeout(function () {
-      assert.ok($($tooltip.data('bs.tooltip').tip).is('.fade.in'), '1ms: tooltip faded in')
+      assert.ok($($tooltip.data('bs.tooltip').tip).is('.fade.show'), '1ms: tooltip faded active')
 
       $tooltip.trigger('mouseout')
 
       setTimeout(function () {
-        assert.ok($($tooltip.data('bs.tooltip').tip).is('.fade.in'), '100ms: tooltip still faded in')
+        assert.ok($($tooltip.data('bs.tooltip').tip).is('.fade.show'), '100ms: tooltip still faded active')
       }, 100)
 
       setTimeout(function () {
-        assert.ok(!$($tooltip.data('bs.tooltip').tip).is('.in'), '200ms: tooltip removed')
+        assert.ok(!$($tooltip.data('bs.tooltip').tip).is('.show'), '200ms: tooltip removed')
         done()
       }, 200)
 
@@ -710,10 +723,10 @@ $(function () {
     $('#tt-outer').trigger('mouseleave')
     assert.strictEqual(currentUid, $('#tt-content').text())
 
-    assert.ok(obj._hoverState == 'out', 'the tooltip hoverState should be set to "out"')
+    assert.ok(obj._hoverState === 'out', 'the tooltip hoverState should be set to "out"')
 
     $('#tt-outer').trigger('mouseenter')
-    assert.ok(obj._hoverState == 'in', 'the tooltip hoverState should be set to "in"')
+    assert.ok(obj._hoverState === 'show', 'the tooltip hoverState should be set to "show"')
 
     assert.strictEqual(currentUid, $('#tt-content').text())
   })
@@ -775,7 +788,7 @@ $(function () {
     var tooltip = $el.data('bs.tooltip')
     var $tooltip = $(tooltip.getTipElement())
 
-    function showingTooltip() { return $tooltip.hasClass('in') || tooltip._hoverState == 'in' }
+    function showingTooltip() { return $tooltip.hasClass('show') || tooltip._hoverState === 'show' }
 
     var tests = [
         ['mouseenter', 'mouseleave'],
@@ -799,10 +812,31 @@ $(function () {
 
     $.each(tests, function (idx, triggers) {
       for (var i = 0, len = triggers.length; i < len; i++) {
-        $el.trigger(triggers[i]);
-        assert.equal(i < (len - 1), showingTooltip())
+        $el.trigger(triggers[i])
+        assert.equal(i < len - 1, showingTooltip())
       }
     })
   })
 
+  QUnit.test('should show on first trigger after hide', function (assert) {
+    assert.expect(3)
+    var $el = $('<a href="#" rel="tooltip" title="Test tooltip"/>')
+      .appendTo('#qunit-fixture')
+      .bootstrapTooltip({ trigger: 'click hover focus', animation: false })
+
+    var tooltip = $el.data('bs.tooltip')
+    var $tooltip = $(tooltip.getTipElement())
+
+    function showingTooltip() { return $tooltip.hasClass('show') || tooltip._hoverState === 'show' }
+
+    $el.trigger('click')
+    assert.ok(showingTooltip(), 'tooltip is faded in')
+
+    $el.bootstrapTooltip('hide')
+    assert.ok(!showingTooltip(), 'tooltip was faded out')
+
+    $el.trigger('click')
+    assert.ok(showingTooltip(), 'tooltip is faded in again')
+  })
+
 })
diff --git a/js/tests/visual/alert.html b/js/tests/visual/alert.html
index 15fb3091a..f99c2d242 100644
--- a/js/tests/visual/alert.html
+++ b/js/tests/visual/alert.html
@@ -1,39 +1,52 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Alert</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-</head>
-<body>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Alert</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Alert <small>Bootstrap Visual Test</small></h1>
 
-<div class="container">
+      <div class="alert alert-warning alert-dismissible fade show" role="alert">
+        <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+        <strong>Holy guacamole!</strong> You should check in on some of those fields below.
+      </div>
 
-  <h1>Alert <small>Bootstrap Visual Test</small></h1>
+      <div class="alert alert-danger alert-dismissible fade show" role="alert">
+        <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+        <p>
+          <strong>Oh snap!</strong> <a href="#" class="alert-link">Change a few things up</a> and try submitting again.
+        </p>
+        <p>
+          <button type="button" class="btn btn-danger">Danger</button>
+          <button type="button" class="btn btn-secondary">Secondary</button>
+        </p>
+      </div>
 
-  <div class="alert alert-warning fade in">
-    <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
-    <strong>Holy guacamole!</strong> Best check yo self, you're not looking too good.
-  </div>
+      <div class="alert alert-danger alert-dismissible fade show" role="alert">
+        <button type="button" class="close" data-dismiss="alert" aria-label="Close">
+          <span aria-hidden="true">&times;</span>
+        </button>
+        <p>
+          <strong>Oh snap!</strong> <a href="#" class="alert-link">Change a few things up</a> and try submitting again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.
+        </p>
+        <p>
+          <button type="button" class="btn btn-danger">Take this action</button>
+          <button type="button" class="btn btn-primary">Or do this</button>
+        </p>
+      </div>
+    </div>
 
-  <div class="alert alert-danger fade in">
-    <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
-    <h4>Oh snap! You got an error!</h4>
-    <p>Change this and that and try again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.</p>
-    <p>
-      <button type="button" class="btn btn-danger">Take this action</button>
-      <button type="button" class="btn btn-default">Or do this</button>
-    </p>
-  </div>
-
-</div>
-
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/alert.js"></script>
-
-</body>
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/alert.js"></script>
+  </body>
 </html>
diff --git a/js/tests/visual/button.html b/js/tests/visual/button.html
index 570c9addd..e2364d781 100644
--- a/js/tests/visual/button.html
+++ b/js/tests/visual/button.html
@@ -1,66 +1,52 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Button</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-</head>
-<body>
-
-<div class="container">
-
-  <h1>Button <small>Bootstrap Visual Test</small></h1>
-
-  <button type="button" class="btn btn-primary" data-toggle="button">Single toggle</button>
-
-  <p>For checkboxes and radio buttons, ensure that keyboard behavior is functioning correctly.</p>
-  <p>Navigate to the checkboxes with the keyboard (generally, using <kbd>TAB</kbd> / <kbd>SHIFT + TAB</kbd>), and ensure that <kbd>SPACE</kbd> toggles the currently focused checkbox. Click on one of the checkboxes using the mouse, ensure that focus was correctly set on the actual checkbox, and that <kbd>SPACE</kbd> toggles the checkbox again.</p>
-
-  <div class="btn-group" data-toggle="buttons">
-    <label class="btn btn-primary">
-      <input type="checkbox"> checkbox 1
-    </label>
-    <label class="btn btn-primary">
-      <input type="checkbox"> checkbox 2
-    </label>
-    <label class="btn btn-primary">
-      <input type="checkbox"> checkbox 3
-    </label>
-  </div>
-
-  <p>Navigate to the radio button group with the keyboard (generally, using <kbd>TAB</kbd> / <kbd>SHIFT + TAB</kbd>). If no radio button was initially set to be selected, the first/last radio button should receive focus (depending on whether you navigated "forward" to the group with <kbd>TAB</kbd> or "backwards" using <kbd>SHIFT + TAB</kbd>). If a radio button was already selected, navigating with the keyboard should set focus to that particular radio button. Only one radio button in a group should receive focus at any given time.  Ensure that the selected radio button can be changed by using the <kbd>←</kbd> and <kbd>→</kbd> arrow keys. Click on one of the radio buttons with the mouse,  ensure that focus was correctly set on the actual radio button, and that <kbd>←</kbd> and <kbd>→</kbd> change the selected radio button again.</p>
-
-  <div class="btn-group" data-toggle="buttons">
-    <label class="btn btn-primary">
-      <input type="radio" name="options" id="option1"> Radio 1
-    </label>
-    <label class="btn btn-primary">
-      <input type="radio" name="options" id="option2"> Radio 2
-    </label>
-    <label class="btn btn-primary">
-      <input type="radio" name="options" id="option3"> Radio 3
-    </label>
-  </div>
-
-</div>
-
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/button.js"></script>
-
-<!-- JavaScript Test -->
-<script>
-$(function () {
-  $('.js-loading-button').on('click', function () {
-    var btn = $(this).button('loading')
-    setTimeout(function (){
-      btn.button('reset')
-    }, 3000)
-  })
-})
-</script>
-</body>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Button</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Button <small>Bootstrap Visual Test</small></h1>
+
+      <button type="button" class="btn btn-primary" data-toggle="button" aria-pressed="false" autocomplete="off">
+        Single toggle
+      </button>
+
+      <p>For checkboxes and radio buttons, ensure that keyboard behavior is functioning correctly.</p>
+      <p>Navigate to the checkboxes with the keyboard (generally, using <kbd>TAB</kbd> / <kbd>SHIFT + TAB</kbd>), and ensure that <kbd>SPACE</kbd> toggles the currently focused checkbox. Click on one of the checkboxes using the mouse, ensure that focus was correctly set on the actual checkbox, and that <kbd>SPACE</kbd> toggles the checkbox again.</p>
+
+      <div class="btn-group" data-toggle="buttons">
+        <label class="btn btn-primary active">
+          <input type="checkbox" checked autocomplete="off"> Checkbox 1 (pre-checked)
+        </label>
+        <label class="btn btn-primary">
+          <input type="checkbox" autocomplete="off"> Checkbox 2
+        </label>
+        <label class="btn btn-primary">
+          <input type="checkbox" autocomplete="off"> Checkbox 3
+        </label>
+      </div>
+
+      <p>Navigate to the radio button group with the keyboard (generally, using <kbd>TAB</kbd> / <kbd>SHIFT + TAB</kbd>). If no radio button was initially set to be selected, the first/last radio button should receive focus (depending on whether you navigated "forward" to the group with <kbd>TAB</kbd> or "backwards" using <kbd>SHIFT + TAB</kbd>). If a radio button was already selected, navigating with the keyboard should set focus to that particular radio button. Only one radio button in a group should receive focus at any given time.  Ensure that the selected radio button can be changed by using the <kbd>←</kbd> and <kbd>→</kbd> arrow keys. Click on one of the radio buttons with the mouse,  ensure that focus was correctly set on the actual radio button, and that <kbd>←</kbd> and <kbd>→</kbd> change the selected radio button again.</p>
+
+      <div class="btn-group" data-toggle="buttons">
+        <label class="btn btn-primary active">
+          <input type="radio" name="options" id="option1" autocomplete="off" checked> Radio 1 (preselected)
+        </label>
+        <label class="btn btn-primary">
+          <input type="radio" name="options" id="option2" autocomplete="off"> Radio 2
+        </label>
+        <label class="btn btn-primary">
+          <input type="radio" name="options" id="option3" autocomplete="off"> Radio 3
+        </label>
+      </div>
+    </div>
+
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/button.js"></script>
+  </body>
 </html>
diff --git a/js/tests/visual/carousel.html b/js/tests/visual/carousel.html
index 859ff7504..b26fb4a0d 100644
--- a/js/tests/visual/carousel.html
+++ b/js/tests/visual/carousel.html
@@ -1,57 +1,77 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Carousel</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-</head>
-<body>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Carousel</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Carousel <small>Bootstrap Visual Test</small></h1>
 
-<div class="container">
+      <p>Also, the carousel shouldn't slide when its window/tab is hidden. Check the console log.</p>
 
-  <h1>Carousel <small>Bootstrap Visual Test</small></h1>
-  <p>Also, the carousel shouldn't slide when its window/tab is hidden. Check the console log.</p>
-  <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
-    <ol class="carousel-indicators">
-      <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
-      <li data-target="#carousel-example-generic" data-slide-to="1" class=""></li>
-      <li data-target="#carousel-example-generic" data-slide-to="2" class=""></li>
-    </ol>
-    <div class="carousel-inner">
-      <div class="carousel-item active">
-        <img alt="First slide" src="https://37.media.tumblr.com/tumblr_m8tay0JcfG1qa42jro1_1280.jpg">
-      </div>
-      <div class="carousel-item">
-        <img alt="Second slide" src="https://37.media.tumblr.com/tumblr_m8tazfiVYJ1qa42jro1_1280.jpg">
-      </div>
-      <div class="carousel-item">
-        <img alt="Third slide" src="https://38.media.tumblr.com/tumblr_m8tb2rVsD31qa42jro1_1280.jpg">
+      <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
+        <ol class="carousel-indicators">
+          <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
+          <li data-target="#carousel-example-generic" data-slide-to="1"></li>
+          <li data-target="#carousel-example-generic" data-slide-to="2"></li>
+        </ol>
+        <div class="carousel-inner" role="listbox">
+          <div class="carousel-item active">
+            <img src="https://37.media.tumblr.com/tumblr_m8tay0JcfG1qa42jro1_1280.jpg" alt="First slide">
+          </div>
+          <div class="carousel-item">
+            <img src="https://37.media.tumblr.com/tumblr_m8tazfiVYJ1qa42jro1_1280.jpg" alt="Second slide">
+          </div>
+          <div class="carousel-item">
+            <img src="https://38.media.tumblr.com/tumblr_m8tb2rVsD31qa42jro1_1280.jpg" alt="Third slide">
+          </div>
+        </div>
+        <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
+          <span class="icon-prev" aria-hidden="true"></span>
+          <span class="sr-only">Previous</span>
+        </a>
+        <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
+          <span class="icon-next" aria-hidden="true"></span>
+          <span class="sr-only">Next</span>
+        </a>
       </div>
     </div>
-    <a class="left carousel-control" href="#carousel-example-generic" data-slide="prev">
-      <span class="glyphicon glyphicon-chevron-left"></span>
-    </a>
-    <a class="right carousel-control" href="#carousel-example-generic" data-slide="next">
-      <span class="glyphicon glyphicon-chevron-right"></span>
-    </a>
-  </div>
 
-</div>
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/carousel.js"></script>
 
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/carousel.js"></script>
-<script>
-  $(function () {
-    // Test to show that the carousel doesn't slide when the current tab isn't visible
-    $('#carousel-example-generic').on('slid.bs.carousel', function (event) {
-      console.log('slid at ', event.timeStamp);
-    })
-  });
-</script>
+    <script>
+      // Should throw an error because carousel is in transition
+      function testCarouselTransitionError() {
+        var err = false
+        var $carousel = $('#carousel-example-generic')
+        $carousel.on('slid.bs.carousel', function () {
+          $carousel.off('slid.bs.carousel')
+          if (!err) {
+            alert('No error thrown for : testCarouselTransitionError')
+          }
+        })
+        try {
+          $carousel.carousel('next').carousel('prev')
+        }
+        catch (e) {
+          err = true
+          console.error(e.message)
+        }
+      }
 
-</body>
+      $(function () {
+        // Test to show that the carousel doesn't slide when the current tab isn't visible
+        $('#carousel-example-generic').on('slid.bs.carousel', function (event) {
+          console.log('slid at ', event.timeStamp)
+        })
+        testCarouselTransitionError()
+      })
+    </script>
+  </body>
 </html>
diff --git a/js/tests/visual/collapse.html b/js/tests/visual/collapse.html
index ec7a6f29a..47ac06fd2 100644
--- a/js/tests/visual/collapse.html
+++ b/js/tests/visual/collapse.html
@@ -1,69 +1,90 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Collapse</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-</head>
-<body>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Collapse</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Collapse <small>Bootstrap Visual Test</small></h1>
 
-<div class="container">
-
-  <h1>Collapse <small>Bootstrap Visual Test</small></h1>
+      <div id="accordion" role="tablist" aria-multiselectable="true">
+        <div class="card">
+          <div class="card-header" role="tab" id="headingOne">
+            <h5 class="mb-0">
+              <a data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
+                Collapsible Group Item #1
+              </a>
+            </h5>
+          </div>
 
-  <div id="accordion">
-    <div class="card">
-      <div class="card-header">
-        <h5 class="mb-0">
-          <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
-            Collapsible Group Item #1
-          </a>
-        </h5>
-      </div>
-      <div id="collapseOne" class="collapse in">
-          <div class="card-block">
-            Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+          <div id="collapseOne" class="collapse show" role="tabpanel" aria-labelledby="headingOne">
+            <div class="card-block">
+              Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+            </div>
           </div>
-      </div>
-    </div>
-    <div class="card">
-      <div class="card-header">
-        <h5 class="mb-0">
-          <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
-            Collapsible Group Item #2
-          </a>
-        </h5>
-      </div>
-      <div id="collapseTwo" class="collapse">
-          <div class="card-block">
-            Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+        </div>
+        <div class="card">
+          <div class="card-header" role="tab" id="headingTwo">
+            <h5 class="mb-0">
+              <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
+                Collapsible Group Item #2
+              </a>
+            </h5>
           </div>
-      </div>
-    </div>
-    <div class="card">
-      <div class="card-header">
-        <h5 class="mb-0">
-          <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
-            Collapsible Group Item #3
-          </a>
-        </h5>
-      </div>
-      <div id="collapseThree" class="collapse">
-          <div class="card-block">
-            Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+          <div id="collapseTwo" class="collapse" role="tabpanel" aria-labelledby="headingTwo">
+            <div class="card-block">
+              Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+            </div>
+          </div>
+        </div>
+        <div class="card">
+          <div class="card-header" role="tab" id="headingThree">
+            <h5 class="mb-0">
+              <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
+                Collapsible Group Item #3
+              </a>
+            </h5>
+          </div>
+          <div id="collapseThree" class="collapse" role="tabpanel" aria-labelledby="headingThree">
+            <div class="card-block">
+              Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+            </div>
           </div>
+        </div>
       </div>
     </div>
-  </div>
 
-</div>
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/collapse.js"></script>
+    <script>
+      // JavaScript Test
+      $(function () {
+        testCollapseTransitionError()
+      });
 
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/collapse.js"></script>
+      // Should throw an error because carousel is in transition
+      function testCollapseTransitionError() {
+        var err = false
+        $('#collapseOne').on('hidden.bs.collapse', function (e) {
+          $(this).off('hidden.bs.collapse')
+          if (!err) {
+            alert('No error thrown for : testCollapseTransitionError')
+          }
+        })
 
-</body>
+        try {
+          $('#collapseOne').collapse('hide').collapse('show')
+        }
+        catch (e) {
+          err = true
+          console.error(e.message)
+        }
+      }
+    </script>
+  </body>
 </html>
diff --git a/js/tests/visual/dropdown.html b/js/tests/visual/dropdown.html
index 7dce87bd1..4bea32c14 100644
--- a/js/tests/visual/dropdown.html
+++ b/js/tests/visual/dropdown.html
@@ -1,107 +1,66 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Dropdown</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-</head>
-<body>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Dropdown</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Dropdown <small>Bootstrap Visual Test</small></h1>
 
-<div class="container">
+      <nav class="navbar navbar-light bg-faded">
+        <button class="navbar-toggler hidden-lg-up" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation"></button>
+        <div class="collapse navbar-toggleable-md" id="navbarResponsive">
+          <a class="navbar-brand" href="#">Navbar</a>
+          <ul class="nav navbar-nav">
+            <li class="nav-item active">
+              <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link" href="#">Link</a>
+            </li>
+            <li class="nav-item">
+              <a class="nav-link" href="#">Link</a>
+            </li>
+            <li class="nav-item dropdown">
+              <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+              <div class="dropdown-menu" aria-labelledby="dropdown">
+                <a class="dropdown-item" href="#">Action</a>
+                <a class="dropdown-item" href="#">Another action</a>
+                <a class="dropdown-item" href="#">Something else here</a>
+              </div>
+            </li>
+          </ul>
+        </div>
+      </nav>
 
-  <h1>Dropdown <small>Bootstrap Visual Test</small></h1>
-
-  <nav id="navbar-example" class="navbar navbar-light bg-faded">
-    <button class="navbar-toggler hidden-sm-up" type="button" data-toggle="collapse" data-target="#exCollapsingNavbar2">
-      &#9776;
-    </button>
-
-    <div class="collapse navbar-toggleable-xs" id="exCollapsingNavbar2">
-
-      <ul class="nav navbar-nav float-xs-left">
-
-        <li class="dropdown nav-item">
-          <a id="drop1" href="#" role="button" class="dropdown-toggle nav-link" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-            Dropdown
-          </a>
-          <div class="dropdown-menu" aria-labelledby="drop1">
-            <a class="dropdown-item" href="https://twitter.com/fat">Action</a>
-            <a class="dropdown-item" href="https://twitter.com/fat">Another action</a>
-            <a class="dropdown-item" href="https://twitter.com/fat">Something else here</a>
-            <div class="dropdown-divider"></div>
-            <a class="dropdown-item" href="https://twitter.com/fat">Separated link</a>
-          </div>
+      <ul class="nav nav-pills mt-3">
+        <li class="nav-item">
+          <a class="nav-link active" href="#">Active</a>
         </li>
-
-        <li class="dropdown nav-item">
-          <a href="#" id="drop2" role="button" class="dropdown-toggle nav-link" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-            Dropdown 2
-          </a>
-          <div class="dropdown-menu" aria-labelledby="drop2">
-            <a class="dropdown-item" href="https://twitter.com/fat">Action</a>
-            <a class="dropdown-item" href="https://twitter.com/fat">Another action</a>
-            <a class="dropdown-item" href="https://twitter.com/fat">Something else here</a>
-            <div class="dropdown-divider"></div>
-            <a class="dropdown-item" href="https://twitter.com/fat">Separated link</a>
-          </div>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
         </li>
-
-      </ul>
-
-      <ul class="nav navbar-nav float-xs-right">
-        <li id="fat-menu" class="dropdown nav-item">
-          <a href="#" id="drop3" role="button" class="dropdown-toggle nav-link" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-            Dropdown 3
-          </a>
-          <div class="dropdown-menu" aria-labelledby="drop3">
-            <a class="dropdown-item" href="https://twitter.com/fat">Action</a>
-            <a class="dropdown-item" href="https://twitter.com/fat">Another action</a>
-            <a class="dropdown-item" href="https://twitter.com/fat">Something else here</a>
-            <div class="dropdown-divider"></div>
-            <a class="dropdown-item" href="https://twitter.com/fat">Separated link</a>
+        <li class="nav-item">
+          <a class="nav-link" href="#">Link</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="http://example.com" id="dropdown2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown2">
+            <a class="dropdown-item" href="#">Action</a>
+            <a class="dropdown-item" href="#">Another action</a>
+            <a class="dropdown-item" href="#">Something else here</a>
           </div>
         </li>
       </ul>
     </div>
-  </nav>
-
-  <ul class="nav nav-pills mt-3">
-    <li class="active nav-item"><a href="#" class="nav-link">Regular link</a></li>
-    <li class="dropdown nav-item">
-      <a id="drop4" class="nav-link" role="button" data-toggle="dropdown" href="#" aria-haspopup="true" aria-expanded="false">
-        Dropdown
-      </a>
-      <div id="menu1" class="dropdown-menu" aria-labelledby="drop4">
-        <a class="dropdown-item" href="https://twitter.com/fat">Action</a>
-        <a class="dropdown-item" href="https://twitter.com/fat">Another action</a>
-        <a class="dropdown-item" href="https://twitter.com/fat">Something else here</a>
-        <div class="dropdown-divider"></div>
-        <a class="dropdown-item" href="https://twitter.com/fat">Separated link</a>
-      </div>
-    </li>
-    <li class="dropdown nav-item">
-      <a id="drop5" class="nav-link" role="button" data-toggle="dropdown" href="#" aria-haspopup="true" aria-expanded="false">
-        Dropdown 2
-      </a>
-      <div id="menu2" class="dropdown-menu" aria-labelledby="drop5">
-        <a class="dropdown-item" href="https://twitter.com/fat">Action</a>
-        <a class="dropdown-item" href="https://twitter.com/fat">Another action</a>
-        <a class="dropdown-item" href="https://twitter.com/fat">Something else here</a>
-        <div class="dropdown-divider"></div>
-        <a class="dropdown-item" href="https://twitter.com/fat">Separated link</a>
-      </div>
-    </li>
-  </ul>
-
-</div>
-
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/dropdown.js"></script>
-<script src="../../dist/collapse.js"></script>
 
-</body>
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/dropdown.js"></script>
+    <script src="../../dist/collapse.js"></script>
+  </body>
 </html>
diff --git a/js/tests/visual/modal.html b/js/tests/visual/modal.html
index a9e2c2440..361bf6b87 100644
--- a/js/tests/visual/modal.html
+++ b/js/tests/visual/modal.html
@@ -1,201 +1,227 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Modal</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-  <style>
-    #tall {
-      height: 1500px;
-      width: 100px;
-      background-color: black;
-      color: white;
-    }
-  </style>
-</head>
-<body>
-
-<nav class="navbar navbar-dark bg-inverse navbar-static-top">
-  <button class="navbar-toggler hidden-sm-up" type="button" data-toggle="collapse" data-target="#exCollapsingNavbar2">
-    &#9776;
-  </button>
-  <div class="collapse navbar-toggleable-xs" id="exCollapsingNavbar2">
-    <a class="navbar-brand" href="#">This shouldn't jump!</a>
-    <ul class="nav navbar-nav">
-      <li class="nav-item active">
-        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Features</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">Pricing</a>
-      </li>
-      <li class="nav-item">
-        <a class="nav-link" href="#">About</a>
-      </li>
-    </ul>
-  </div>
-</nav>
-
-<div class="container mt-3">
-
-  <h1>Modal <small>Bootstrap Visual Test</small></h1>
-
-  <div id="myModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
-    <div class="modal-dialog" role="document">
-      <div class="modal-content">
-
-        <div class="modal-header">
-          <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
-          <h4 class="modal-title" id="myModalLabel">Modal Heading</h4>
-        </div>
-        <div class="modal-body">
-          <h4>Text in a modal</h4>
-          <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula.</p>
-
-          <h4>Popover in a modal</h4>
-          <p>This <a href="#" role="button" class="btn btn-primary js-popover" title="A Title" data-content="And here's some amazing content. It's very engaging. right?" data-placement="left">button</a> should trigger a popover on click.</p>
-
-          <h4>Tooltips in a modal</h4>
-          <p><a href="#" class="js-tooltip" title="Tooltip">This link</a> and <a href="#" class="js-tooltip" title="Tooltip">that link</a> should have tooltips on hover.</p>
-
-          <div id="accordion" role="tablist" aria-multiselectable="true">
-            <div class="card">
-              <div class="card-header" role="tab" id="headingOne">
-                <h5 class="mb-0">
-                  <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
-                    Collapsible Group Item #1
-                  </a>
-                </h5>
-              </div>
-              <div id="collapseOne" class="collapse in" role="tabpanel" aria-labelledby="headingOne">
-                <div class="card-block">
-                  Lorem ipsum
-                </div>
-              </div>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Modal</title>
+    <style>
+      #tall {
+        height: 1500px;
+        width: 100px;
+      }
+    </style>
+  </head>
+  <body>
+    <nav class="navbar navbar-full navbar-dark bg-inverse">
+      <button class="navbar-toggler hidden-lg-up" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation"></button>
+      <div class="collapse navbar-toggleable-md" id="navbarResponsive">
+        <a class="navbar-brand" href="#">This shouldn't jump!</a>
+        <ul class="nav navbar-nav">
+          <li class="nav-item active">
+            <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#">Link</a>
+          </li>
+        </ul>
+      </div>
+    </nav>
+
+    <div class="container mt-3">
+      <h1>Modal <small>Bootstrap Visual Test</small></h1>
+
+      <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
+        <div class="modal-dialog" role="document">
+          <div class="modal-content">
+            <div class="modal-header">
+              <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                <span aria-hidden="true">&times;</span>
+              </button>
+              <h4 class="modal-title" id="myModalLabel">Modal title</h4>
             </div>
-            <div class="card">
-              <div class="card-header" role="tab" id="headingTwo">
-                <h5 class="mb-0">
-                  <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
-                    Collapsible Group Item #2
-                  </a>
-                </h5>
-              </div>
-              <div id="collapseTwo" class="collapse" role="tabpanel" aria-labelledby="headingTwo">
-                <div class="card-block">
-                  Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
-                  Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
-                  Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+            <div class="modal-body">
+              <h4>Text in a modal</h4>
+              <p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula.</p>
+
+              <h4>Popover in a modal</h4>
+              <p>This <button type="button" class="btn btn-primary" data-toggle="popover" data-placement="left" title="Popover title" data-content="And here's some amazing content. It's very engaging. Right?">button</button> should trigger a popover on click.</p>
+
+
+              <h4>Tooltips in a modal</h4>
+              <p><a href="#" data-toggle="tooltip" data-placement="top" title="Tooltip on top">This link</a> and <a href="#" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">that link</a> should have tooltips on hover.</p>
+
+              <div id="accordion" role="tablist" aria-multiselectable="true">
+                <div class="card">
+                  <div class="card-header" role="tab" id="headingOne">
+                    <h5 class="mb-0">
+                      <a data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
+                        Collapsible Group Item #1
+                      </a>
+                    </h5>
+                  </div>
+
+                  <div id="collapseOne" class="collapse show" role="tabpanel" aria-labelledby="headingOne">
+                    <div class="card-block">
+                      Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+                    </div>
+                  </div>
+                </div>
+                <div class="card">
+                  <div class="card-header" role="tab" id="headingTwo">
+                    <h5 class="mb-0">
+                      <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
+                        Collapsible Group Item #2
+                      </a>
+                    </h5>
+                  </div>
+                  <div id="collapseTwo" class="collapse" role="tabpanel" aria-labelledby="headingTwo">
+                    <div class="card-block">
+                      Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+                    </div>
+                  </div>
+                </div>
+                <div class="card">
+                  <div class="card-header" role="tab" id="headingThree">
+                    <h5 class="mb-0">
+                      <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
+                        Collapsible Group Item #3
+                      </a>
+                    </h5>
+                  </div>
+                  <div id="collapseThree" class="collapse" role="tabpanel" aria-labelledby="headingThree">
+                    <div class="card-block">
+                      Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
+                    </div>
+                  </div>
                 </div>
               </div>
+
+              <hr>
+
+              <h4>Overflowing text to show scroll behavior</h4>
+              <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+              <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+              <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+              <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+              <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+              <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+              <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
+              <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
+              <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
+            </div>
+            <div class="modal-footer">
+              <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+              <button type="button" class="btn btn-primary">Save changes</button>
             </div>
           </div>
-
-          <hr>
-
-          <h4>Overflowing text to show scroll behavior</h4>
-          <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
-          <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
-          <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
-          <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
-          <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
-          <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
-          <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
-          <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p>
-          <p>Aenean lacinia bibendum nulla sed consectetur. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Donec sed odio dui. Donec ullamcorper nulla non metus auctor fringilla.</p>
         </div>
-        <div class="modal-footer">
-          <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
-          <button type="button" class="btn btn-primary">Save changes</button>
-        </div>
-
       </div>
-    </div>
-  </div>
-
-  <div id="myModal2" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel2">
-    <div class="modal-dialog" role="document">
-      <div class="modal-content">
-        <div class="modal-header">
-          <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
-          <h4 class="modal-title" id="myModalLabel2">Modal Heading</h4>
-        </div>
-        <div class="modal-body">
-          <ol>
-            <li>Ensure you're using Firefox.</li>
-            <li>Open a new tab and then switch back to this tab.</li>
-            <li>Click into this input: <input type="text" id="ff-bug-input"></li>
-            <li>Switch to the other tab and then back to this tab.</li>
-          </ol>
-          <p>Test result: <strong id="ff-bug-test-result"></strong></p>
+
+      <div class="modal fade" id="firefoxModal" tabindex="-1" role="dialog" aria-labelledby="firefoxModalLabel" aria-hidden="true">
+        <div class="modal-dialog" role="document">
+          <div class="modal-content">
+            <div class="modal-header">
+              <button type="button" class="close" data-dismiss="modal" aria-label="Close">
+                <span aria-hidden="true">&times;</span>
+              </button>
+              <h4 class="modal-title" id="firefoxModalLabel">Firefox Bug Test</h4>
+            </div>
+            <div class="modal-body">
+              <ol>
+                <li>Ensure you're using Firefox.</li>
+                <li>Open a new tab and then switch back to this tab.</li>
+                <li>Click into this input: <input type="text" id="ff-bug-input"></li>
+                <li>Switch to the other tab and then back to this tab.</li>
+              </ol>
+              <p>Test result: <strong id="ff-bug-test-result"></strong></p>
+            </div>
+            <div class="modal-footer">
+              <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
+              <button type="button" class="btn btn-primary">Save changes</button>
+            </div>
+          </div>
         </div>
       </div>
+
+      <button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
+        Launch demo modal
+      </button>
+
+      <button type="button" class="btn btn-primary btn-lg" id="tall-toggle">
+        Toggle tall &lt;body&gt; content
+      </button>
+
+      <br><br>
+
+      <button type="button" class="btn btn-secondary btn-lg" data-toggle="modal" data-target="#firefoxModal">
+        Launch Firefox bug test modal
+      </button>
+      (<a href="https://github.com/twbs/bootstrap/issues/18365">See Issue #18365</a>)
+
+      <br><br>
+
+      <div class="bg-inverse text-white p-2" id="tall" style="display: none;">
+        Tall body content to force the page to have a scrollbar.
+      </div>
     </div>
-  </div>
-
-  <button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
-    Launch demo modal
-  </button>
-
-  <button id="tall-toggle" class="btn btn-default">Toggle tall &lt;body&gt; content</button>
-  <br><br>
-  <button class="btn btn-secondary btn-lg" data-toggle="modal" data-target="#myModal2">
-    Launch Firefox bug test modal
-  </button>
-  (<a href="https://github.com/twbs/bootstrap/issues/18365">See Issue #18365</a>)
-  <br><br>
-  <div id="tall" style="display: none;">
-    Tall body content to force the page to have a scrollbar.
-  </div>
-
-</div>
-
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../vendor/tether.min.js"></script>
-
-<script src="../../dist/util.js"></script>
-<script src="../../dist/modal.js"></script>
-<script src="../../dist/collapse.js"></script>
-<script src="../../dist/tooltip.js"></script>
-<script src="../../dist/popover.js"></script>
-
-<!-- <script src="../../transition.js"></script>
-<script src="../../tooltip.js"></script>
-<script src="../../popover.js"></script> -->
-
-<!-- JavaScript Test -->
-<script>
-var firefoxTestDone = false
-function reportFirefoxTestResult(result) {
-  if (!firefoxTestDone) {
-    $('#ff-bug-test-result')
-      .addClass(result ? 'text-success' : 'text-danger')
-      .text(result ? 'PASS' : 'FAIL')
-  }
-  firefoxTestDone = true
-}
-
-$(function () {
-  $('.js-popover').popover()
-  $('.js-tooltip').tooltip()
-  $('#tall-toggle').click(function () {
-    $('#tall').toggle()
-  })
-  $('#ff-bug-input').one('focus', function () {
-    $('#myModal2').on('focus', function () {
-      reportFirefoxTestResult(false)
-    })
-    $('#ff-bug-input').on('focus', function () {
-      reportFirefoxTestResult(true)
-    })
-  })
-})
-</script>
-
-</body>
+
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../vendor/tether.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/modal.js"></script>
+    <script src="../../dist/collapse.js"></script>
+    <script src="../../dist/tooltip.js"></script>
+    <script src="../../dist/popover.js"></script>
+
+    <script>
+      var firefoxTestDone = false
+      function reportFirefoxTestResult(result) {
+        if (!firefoxTestDone) {
+          $('#ff-bug-test-result')
+            .addClass(result ? 'text-success' : 'text-danger')
+            .text(result ? 'PASS' : 'FAIL')
+        }
+      }
+
+      // Should throw an error because modal is in transition
+      function testModalTransitionError() {
+        var err = false
+        // Close #myModal
+        $('#myModal').on('shown.bs.modal', function () {
+          $('#myModal').modal('hide').off('shown.bs.modal')
+          if (!err) {
+            alert('No error thrown for : testModalTransitionError')
+          }
+        })
+
+        try {
+          $('#myModal').modal('show').modal('hide')
+        }
+        catch (e) {
+          err = true
+          console.error(e.message)
+        }
+      }
+
+      $(function () {
+        $('[data-toggle="popover"]').popover()
+        $('[data-toggle="tooltip"]').tooltip()
+
+        $('#tall-toggle').click(function () {
+          $('#tall').toggle()
+        })
+
+        $('#ff-bug-input').one('focus', function () {
+          $('#firefoxModal').on('focus', reportFirefoxTestResult.bind(false))
+          $('#ff-bug-input').on('focus', reportFirefoxTestResult.bind(true))
+        })
+        testModalTransitionError()
+      })
+    </script>
+  </body>
 </html>
diff --git a/js/tests/visual/popover.html b/js/tests/visual/popover.html
index 927e71b00..75fb926c1 100644
--- a/js/tests/visual/popover.html
+++ b/js/tests/visual/popover.html
@@ -1,47 +1,44 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Popover</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.css">
-</head>
-<body>
-
-<div class="container">
-
-  <h1>Popover <small>Bootstrap Visual Test</small></h1>
-
-  <button type="button" class="btn btn-default js-popover" data-container="body" data-toggle="popover" data-placement="left" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus." data-original-title="" title="">
-    Popover on left
-  </button>
-  <button type="button" class="btn btn-default js-popover" data-container="body" data-toggle="popover" data-placement="top" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus." data-original-title="" title="">
-    Popover on top
-  </button>
-  <button type="button" class="btn btn-default js-popover" data-container="body" data-toggle="popover" data-placement="bottom" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus." data-original-title="" title="">
-    Popover on bottom
-  </button>
-  <button type="button" class="btn btn-default js-popover" data-container="body" data-toggle="popover" data-placement="right" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus." data-original-title="" title="">
-    Popover on right
-  </button>
-
-</div>
-
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../vendor/tether.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/tooltip.js"></script>
-<script src="../../dist/popover.js"></script>
-
-
-<!-- JavaScript Test -->
-<script>
-$(function () {
-  $('.js-popover').popover()
-})
-</script>
-
-</body>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Popover</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Popover <small>Bootstrap Visual Test</small></h1>
+
+      <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="top" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+        Popover on top
+      </button>
+
+      <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="right" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+        Popover on right
+      </button>
+
+      <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="bottom" data-content="Vivamus
+      sagittis lacus vel augue laoreet rutrum faucibus.">
+        Popover on bottom
+      </button>
+
+      <button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="left" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
+        Popover on left
+      </button>
+    </div>
+
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../vendor/tether.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/tooltip.js"></script>
+    <script src="../../dist/popover.js"></script>
+
+    <script>
+      $(function () {
+        $('[data-toggle="popover"]').popover()
+      })
+    </script>
+  </body>
 </html>
diff --git a/js/tests/visual/scrollspy.html b/js/tests/visual/scrollspy.html
index efe6f593b..337611126 100644
--- a/js/tests/visual/scrollspy.html
+++ b/js/tests/visual/scrollspy.html
@@ -1,90 +1,93 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Scrollspy</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-  <style>
-    body { padding-top: 70px; }
-  </style>
-</head>
-<body data-spy="scroll" data-target=".navbar" data-offset="70">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Scrollspy</title>
+    <style>
+      body { padding-top: 70px; }
+    </style>
+  </head>
+  <body data-spy="scroll" data-target=".navbar" data-offset="70">
+    <div class="container">
+      <nav class="navbar navbar-fixed-top navbar-dark bg-inverse">
+        <a class="navbar-brand" href="#">Scrollspy test</a>
+        <ul class="nav navbar-nav">
+          <li class="nav-item">
+            <a class="nav-link" href="#fat">@fat</a>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#mdo">@mdo</a>
+          </li>
+          <li class="nav-item dropdown">
+            <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+            <div class="dropdown-menu" aria-labelledby="dropdown">
+              <a class="dropdown-item" href="#one">one</a>
+              <a class="dropdown-item" href="#two">two</a>
+              <div class="dropdown-divider"></div>
+              <a class="dropdown-item" href="#three">three</a>
+            </div>
+          </li>
+          <li class="nav-item">
+            <a class="nav-link" href="#final">Final</a>
+          </li>
+        </ul>
+      </nav>
 
-<div class="container">
-
-  <nav class="navbar navbar-dark navbar-fixed-top bg-inverse">
-    <div class="js-navbar-scrollspy">
-      <ul class="nav navbar-nav">
-        <li class="nav-item"><a class="nav-link active" href="#fat">@fat</a></li>
-        <li class="nav-item"><a class="nav-link" href="#mdo">@mdo</a></li>
-        <li class="dropdown nav-item">
-          <a href="#" class="dropdown-toggle nav-link" data-toggle="dropdown">Dropdown</a>
-          <div class="dropdown-menu" role="menu">
-            <a class="dropdown-item" href="#one" tabindex="-1">one</a>
-            <a class="dropdown-item" href="#two" tabindex="-1">two</a>
-            <div class="dropdown-divider"></div>
-            <a class="dropdown-item" href="#three" tabindex="-1">three</a>
-          </div>
-        </li>
-      </ul>
+      <h2 id="fat">@fat</h2>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <hr>
+      <h2 id="mdo">@mdo</h2>
+      <p>Veniam marfa mustache skateboard, adipisicing fugiat velit pitchfork beard. Freegan beard aliqua cupidatat mcsweeney's vero. Cupidatat four loko nisi, ea helvetica nulla carles. Tattooed cosby sweater food truck, mcsweeney's quis non freegan vinyl. Lo-fi wes anderson +1 sartorial. Carles non aesthetic exercitation quis gentrify. Brooklyn adipisicing craft beer vice keytar deserunt.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <hr>
+      <h2 id="one">one</h2>
+      <p>Occaecat commodo aliqua delectus. Fap craft beer deserunt skateboard ea. Lomo bicycle rights adipisicing banh mi, velit ea sunt next level locavore single-origin coffee in magna veniam. High life id vinyl, echo park consequat quis aliquip banh mi pitchfork. Vero VHS est adipisicing. Consectetur nisi DIY minim messenger bag. Cred ex in, sustainable delectus consectetur fanny pack iphone.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <hr>
+      <h2 id="two">two</h2>
+      <p>In incididunt echo park, officia deserunt mcsweeney's proident master cleanse thundercats sapiente veniam. Excepteur VHS elit, proident shoreditch +1 biodiesel laborum craft beer. Single-origin coffee wayfarers irure four loko, cupidatat terry richardson master cleanse. Assumenda you probably haven't heard of them art party fanny pack, tattooed nulla cardigan tempor ad. Proident wolf nesciunt sartorial keffiyeh eu banh mi sustainable. Elit wolf voluptate, lo-fi ea portland before they sold out four loko. Locavore enim nostrud mlkshk brooklyn nesciunt.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <hr>
+      <h2 id="three">three</h2>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Keytar twee blog, culpa messenger bag marfa whatever delectus food truck. Sapiente synth id assumenda. Locavore sed helvetica cliche irony, thundercats you probably haven't heard of them consequat hoodie gluten-free lo-fi fap aliquip. Labore elit placeat before they sold out, terry richardson proident brunch nesciunt quis cosby sweater pariatur keffiyeh ut helvetica artisan. Cardigan craft beer seitan readymade velit. VHS chambray laboris tempor veniam. Anim mollit minim commodo ullamco thundercats.
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <hr>
+      <h2 id="final">Final section</h2>
+      <p>Ad leggings keytar, brunch id art party dolor labore.</p>
     </div>
-  </nav>
-
-
-  <h2 id="fat">@fat</h2>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <hr>
-  <h2 id="mdo">@mdo</h2>
-  <p>Veniam marfa mustache skateboard, adipisicing fugiat velit pitchfork beard. Freegan beard aliqua cupidatat mcsweeney's vero. Cupidatat four loko nisi, ea helvetica nulla carles. Tattooed cosby sweater food truck, mcsweeney's quis non freegan vinyl. Lo-fi wes anderson +1 sartorial. Carles non aesthetic exercitation quis gentrify. Brooklyn adipisicing craft beer vice keytar deserunt.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <hr>
-  <h2 id="one">one</h2>
-  <p>Occaecat commodo aliqua delectus. Fap craft beer deserunt skateboard ea. Lomo bicycle rights adipisicing banh mi, velit ea sunt next level locavore single-origin coffee in magna veniam. High life id vinyl, echo park consequat quis aliquip banh mi pitchfork. Vero VHS est adipisicing. Consectetur nisi DIY minim messenger bag. Cred ex in, sustainable delectus consectetur fanny pack iphone.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <hr>
-  <h2 id="two">two</h2>
-  <p>In incididunt echo park, officia deserunt mcsweeney's proident master cleanse thundercats sapiente veniam. Excepteur VHS elit, proident shoreditch +1 biodiesel laborum craft beer. Single-origin coffee wayfarers irure four loko, cupidatat terry richardson master cleanse. Assumenda you probably haven't heard of them art party fanny pack, tattooed nulla cardigan tempor ad. Proident wolf nesciunt sartorial keffiyeh eu banh mi sustainable. Elit wolf voluptate, lo-fi ea portland before they sold out four loko. Locavore enim nostrud mlkshk brooklyn nesciunt.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <hr>
-  <h2 id="three">three</h2>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Keytar twee blog, culpa messenger bag marfa whatever delectus food truck. Sapiente synth id assumenda. Locavore sed helvetica cliche irony, thundercats you probably haven't heard of them consequat hoodie gluten-free lo-fi fap aliquip. Labore elit placeat before they sold out, terry richardson proident brunch nesciunt quis cosby sweater pariatur keffiyeh ut helvetica artisan. Cardigan craft beer seitan readymade velit. VHS chambray laboris tempor veniam. Anim mollit minim commodo ullamco thundercats.
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
-  <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
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-<script src="../vendor/jquery.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/scrollspy.js"></script>
-<script src="../../dist/dropdown.js"></script>
-<script src="../../dist/collapse.js"></script>
 
-</body>
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/scrollspy.js"></script>
+    <script src="../../dist/dropdown.js"></script>
+    <script src="../../dist/collapse.js"></script>
+  </body>
 </html>
diff --git a/js/tests/visual/tab.html b/js/tests/visual/tab.html
index d09622d72..14481cac5 100644
--- a/js/tests/visual/tab.html
+++ b/js/tests/visual/tab.html
@@ -1,162 +1,173 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Tab</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
-  <style>
-    h4 {
-      margin: 40px 0 10px;
-    }
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Tab</title>
+    <style>
+      h4 {
+        margin: 40px 0 10px;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Tab <small>Bootstrap Visual Test</small></h1>
 
-    .nav-tabs {
-      margin-bottom: 15px;
-    }
-  </style>
-</head>
-<body>
+      <h4>Tabs without fade</h4>
 
-<div class="container">
+      <ul class="nav nav-tabs" role="tablist">
+        <li class="nav-item">
+          <a class="nav-link active" data-toggle="tab" href="#home" role="tab">Home</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" data-toggle="tab" href="#profile" role="tab">Profile</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown">
+            <a class="dropdown-item" data-toggle="tab" href="#fat" role="tab">@fat</a>
+            <a class="dropdown-item" data-toggle="tab" href="#mdo" role="tab">@mdo</a>
+          </div>
+        </li>
+      </ul>
 
-  <h1>Tab <small>Bootstrap Visual Test</small></h1>
-
-  <h4>Tabs without fade</h4>
-
-  <ul id="myTab" class="nav nav-tabs">
-    <li class="nav-item"><a href="#home" class="nav-link active" data-toggle="tab">Home</a></li>
-    <li class="nav-item"><a href="#profile" data-toggle="tab" class="nav-link">Profile</a></li>
-    <li class="dropdown nav-item">
-      <a href="#" id="myTabDrop1" class="dropdown-toggle nav-link" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
-      <div class="dropdown-menu" role="menu" aria-labelledby="myTabDrop1">
-        <a class="dropdown-item" href="#dropdown1" tabindex="-1" data-toggle="tab">@fat</a>
-        <a class="dropdown-item" href="#dropdown2" tabindex="-1" data-toggle="tab">@mdo</a>
+      <div class="tab-content" role="tablist">
+        <div class="tab-pane active" id="home" role="tabpanel">
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+        </div>
+        <div class="tab-pane" id="profile" role="tabpanel">
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+        </div>
+        <div class="tab-pane" id="fat" role="tabpanel">
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+        </div>
+        <div class="tab-pane" id="mdo" role="tabpanel">
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+        </div>
       </div>
-    </li>
-  </ul>
-  <div id="myTabContent" class="tab-content">
-    <div class="tab-pane active" id="home">
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
-    </div>
-    <div class="tab-pane" id="profile">
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-    </div>
-    <div class="tab-pane" id="dropdown1">
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-    </div>
-    <div class="tab-pane" id="dropdown2">
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-    </div>
-  </div>
 
-  <h4>Tabs with fade</h4>
+      <h4>Tabs with fade</h4>
 
-  <ul id="myTab1" class="nav nav-tabs">
-    <li class="nav-item"><a class="nav-link active" href="#home1" data-toggle="tab">Home</a></li>
-    <li class="nav-item"><a class="nav-link" href="#profile1" data-toggle="tab">Profile</a></li>
-    <li class="dropdown nav-item">
-      <a href="#" id="myTabDrop2" class="dropdown-toggle nav-link" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
-      <div class="dropdown-menu" role="menu" aria-labelledby="myTabDrop2">
-        <a class="dropdown-item" href="#dropdown1-1" tabindex="-1" data-toggle="tab">@fat</a>
-        <a class="dropdown-item" href="#dropdown1-2" tabindex="-1" data-toggle="tab">@mdo</a>
+      <ul class="nav nav-tabs" role="tablist">
+        <li class="nav-item">
+          <a class="nav-link active" data-toggle="tab" href="#home2" role="tab">Home</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" data-toggle="tab" href="#profile2" role="tab">Profile</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown2">
+            <a class="dropdown-item" data-toggle="tab" href="#fat2" role="tab">@fat</a>
+            <a class="dropdown-item" data-toggle="tab" href="#mdo2" role="tab">@mdo</a>
+          </div>
+        </li>
+      </ul>
+
+      <div class="tab-content" role="tablist">
+        <div class="tab-pane fade in active" id="home2" role="tabpanel">
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+        </div>
+        <div class="tab-pane fade" id="profile2" role="tabpanel">
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+        </div>
+        <div class="tab-pane fade" id="fat2" role="tabpanel">
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+        </div>
+        <div class="tab-pane fade" id="mdo2" role="tabpanel">
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+        </div>
       </div>
-    </li>
-  </ul>
-  <div id="myTabContent1" class="tab-content">
-    <div class="tab-pane fade in active" id="home1">
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
-    </div>
-    <div class="tab-pane fade" id="profile1">
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-    </div>
-    <div class="tab-pane fade" id="dropdown1-1">
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-    </div>
-    <div class="tab-pane fade" id="dropdown1-2">
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-    </div>
-  </div>
 
-  <h4>Tabs without fade (no initially active pane)</h4>
+      <h4>Tabs without fade (no initially active pane)</h4>
 
-  <ul id="myTab2" class="nav nav-tabs">
-    <li class="nav-item"><a class="nav-link" href="#home2" data-toggle="tab">Home</a></li>
-    <li class="nav-item"><a class="nav-link" href="#profile2" data-toggle="tab">Profile</a></li>
-    <li class="dropdown nav-item">
-      <a href="#" id="myTabDrop3" class="dropdown-toggle nav-link" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
-      <div class="dropdown-menu" role="menu" aria-labelledby="myTabDrop3">
-        <a class="dropdown-item" href="#dropdown2-1" tabindex="-1" data-toggle="tab">@fat</a>
-        <a class="dropdown-item" href="#dropdown2-2" tabindex="-1" data-toggle="tab">@mdo</a>
+      <ul class="nav nav-tabs" role="tablist">
+        <li class="nav-item">
+          <a class="nav-link" data-toggle="tab" href="#home3" role="tab">Home</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" data-toggle="tab" href="#profile3" role="tab">Profile</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown3" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown3">
+            <a class="dropdown-item" data-toggle="tab" href="#fat3" role="tab">@fat</a>
+            <a class="dropdown-item" data-toggle="tab" href="#mdo3" role="tab">@mdo</a>
+          </div>
+        </li>
+      </ul>
+
+      <div class="tab-content" role="tablist">
+        <div class="tab-pane" id="home3" role="tabpanel">
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+        </div>
+        <div class="tab-pane" id="profile3" role="tabpanel">
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+        </div>
+        <div class="tab-pane" id="fat3" role="tabpanel">
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+        </div>
+        <div class="tab-pane" id="mdo3" role="tabpanel">
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+        </div>
       </div>
-    </li>
-  </ul>
-  <div id="myTabContent2" class="tab-content">
-    <div class="tab-pane" id="home2">
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
-    </div>
-    <div class="tab-pane" id="profile2">
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-    </div>
-    <div class="tab-pane" id="dropdown2-1">
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-    </div>
-    <div class="tab-pane" id="dropdown2-2">
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-    </div>
-  </div>
 
-  <h4>Tabs with fade (no initially active pane)</h4>
+      <h4>Tabs with fade (no initially active pane)</h4>
+
+      <ul class="nav nav-tabs" role="tablist">
+        <li class="nav-item">
+          <a class="nav-link" data-toggle="tab" href="#home4" role="tab">Home</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-link" data-toggle="tab" href="#profile4" role="tab">Profile</a>
+        </li>
+        <li class="nav-item dropdown">
+          <a class="nav-link dropdown-toggle" href="#" id="dropdown4" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown</a>
+          <div class="dropdown-menu" aria-labelledby="dropdown4">
+            <a class="dropdown-item" data-toggle="tab" href="#fat4" role="tab">@fat</a>
+            <a class="dropdown-item" data-toggle="tab" href="#mdo4" role="tab">@mdo</a>
+          </div>
+        </li>
+      </ul>
 
-  <ul id="myTab3" class="nav nav-tabs">
-    <li class="nav-item"><a class="nav-link" href="#home3" data-toggle="tab">Home</a></li>
-    <li class="nav-item"><a class="nav-link" href="#profile3" data-toggle="tab">Profile</a></li>
-    <li class="dropdown nav-item">
-      <a href="#" id="myTabDrop4" class="dropdown-toggle nav-link" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
-      <div class="dropdown-menu" role="menu" aria-labelledby="myTabDrop4">
-        <a class="dropdown-item" href="#dropdown3-1" tabindex="-1" data-toggle="tab">@fat</a>
-        <a class="dropdown-item" href="#dropdown3-2" tabindex="-1" data-toggle="tab">@mdo</a>
+      <div class="tab-content">
+        <div class="tab-pane fade" id="home4" role="tabpanel">
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+          <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
+        </div>
+        <div class="tab-pane fade" id="profile4" role="tabpanel">
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+          <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
+        </div>
+        <div class="tab-pane fade" id="fat4" role="tabpanel">
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+          <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
+        </div>
+        <div class="tab-pane fade" id="mdo4" role="tabpanel">
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+          <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
+        </div>
       </div>
-    </li>
-  </ul>
-  <div id="myTabContent3" class="tab-content">
-    <div class="tab-pane fade" id="home3">
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
-      <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
     </div>
-    <div class="tab-pane fade" id="profile3">
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-      <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
-    </div>
-    <div class="tab-pane fade" id="dropdown3-1">
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-      <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
-    </div>
-    <div class="tab-pane fade" id="dropdown3-2">
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-      <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
-    </div>
-  </div>
-
-</div>
-
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/tab.js"></script>
-<script src="../../dist/dropdown.js"></script>
 
-</body>
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/tab.js"></script>
+    <script src="../../dist/dropdown.js"></script>
+  </body>
 </html>
diff --git a/js/tests/visual/tooltip.html b/js/tests/visual/tooltip.html
index f6b64ce95..6cd33e7e6 100644
--- a/js/tests/visual/tooltip.html
+++ b/js/tests/visual/tooltip.html
@@ -1,42 +1,67 @@
 <!DOCTYPE html>
 <html>
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>Tooltip</title>
-  <link rel="stylesheet" href="../../../dist/css/bootstrap.css">
-</head>
-<body>
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta http-equiv="x-ua-compatible" content="ie=edge">
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+    <title>Tooltip</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Tooltip <small>Bootstrap Visual Test</small></h1>
 
-<div class="container">
+      <p class="text-muted">Tight pants next level keffiyeh <a href="#" data-toggle="tooltip" title="Default tooltip">you probably</a> haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel <a href="#" data-toggle="tooltip" title="Another tooltip">have a</a> terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan <a href="#" data-toggle="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" data-toggle="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.</p>
 
-  <h1>Tooltip <small>Bootstrap Visual Test</small></h1>
+      <hr>
 
-  <p class="muted" style="margin-bottom: 0;">Tight pants next level keffiyeh <a href="#" data-toggle="tooltip" title="Default tooltip">you probably</a> haven't heard of them. Photo booth beard raw denim letterpress vegan messenger bag stumptown. Farm-to-table seitan, mcsweeney's fixie sustainable quinoa 8-bit american apparel <a href="#" data-toggle="tooltip" title="Another tooltip">have a</a> terry richardson vinyl chambray. Beard stumptown, cardigans banh mi lomo thundercats. Tofu biodiesel williamsburg marfa, four loko mcsweeney's cleanse vegan chambray. A really ironic artisan <a href="#" data-toggle="tooltip" title="Another one here too">whatever keytar</a>, scenester farm-to-table banksy Austin <a href="#" data-toggle="tooltip" title="The last tip!">twitter handle</a> freegan cred raw denim single-origin coffee viral.
-  </p>
-  <hr>
-  <p>
-    <button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="left" title="" data-original-title="Tooltip on left">Tooltip on left</button>
-    <button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="top" title="Tooltip on top">Tooltip on top</button>
-    <button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">Tooltip on bottom</button>
-    <button type="button" class="btn btn-default" data-toggle="tooltip" data-placement="right" title="Tooltip on right">Tooltip on right</button>
-  </p>
+      <p>
+        <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top">
+          Tooltip on top
+        </button>
+        <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="right" title="Tooltip on right">
+          Tooltip on right
+        </button>
+        <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">
+          Tooltip on bottom
+        </button>
+        <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip on left">
+          Tooltip on left
+        </button>
+        <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-html="true" title="<em>Tooltip</em> <u>with</u> <b>HTML</b>">
+          Tooltip with HTML
+        </button>
+      </p>
+    </div>
 
-</div>
+    <script src="../vendor/jquery.min.js"></script>
+    <script src="../vendor/tether.min.js"></script>
+    <script src="../../dist/util.js"></script>
+    <script src="../../dist/tooltip.js"></script>
 
-<!-- JavaScript Includes -->
-<script src="../vendor/jquery.min.js"></script>
-<script src="../vendor/tether.min.js"></script>
-<script src="../../dist/util.js"></script>
-<script src="../../dist/tooltip.js"></script>
+    <script>
+      $(function () {
+        $('[data-toggle="tooltip"]').tooltip()
+        testTooltipTransitionError()
+      })
 
-<!-- JavaScript Test -->
-<script>
-$(function () {
-  $('[data-toggle="tooltip"]').tooltip()
-})
-</script>
-
-</body>
+      // Should throw an error because tooltip is in transition
+      function testTooltipTransitionError() {
+        var err = false
+        $('#btnOne').on('shown.bs.tooltip', function () {
+          $('#btnOne').tooltip('hide').off('shown.bs.tooltip')
+          if (!err) {
+            alert('No error thrown for : testTooltipTransitionError')
+          }
+        })
+        try {
+          $('#btnOne').tooltip('show').tooltip('hide')
+        }
+        catch (e) {
+          err = true
+          console.error(e.message)
+        }
+      }
+    </script>
+  </body>
 </html>