Merge branch 'twbs/v4-dev' into v4-dev

1 files changed, 14 insertions, 7 deletions

diff --git a/docs/migration.md b/docs/migration.md
index b043fbfad..5e7236f8a 100644
--- a/docs/migration.md
+++ b/docs/migration.md
@@ -41,7 +41,7 @@ Here are the big ticket items you'll want to be aware of when moving from v3 to
 
 - Dropped panels, thumbnails, and wells for a new all-encompassing component, cards.
 - Dropped the Glyphicons icon font. If you need icons, some options are:
-  - the upstream version of [Glyphicons](http://glyphicons.com/)
+  - the upstream version of [Glyphicons](https://glyphicons.com/)
   - [Octicons](https://octicons.github.com/)
   - [Font Awesome](https://fortawesome.github.io/Font-Awesome/)
 - Dropped the Affix jQuery plugin. We recommend using a `position: sticky` polyfill instead. [See the HTML5 Please entry](http://html5please.com/#sticky) for details and specific polyfill recommendations.
@@ -80,7 +80,8 @@ New to Bootstrap 4 is the Reboot, a new stylesheet that builds on Normalize with
 - Renamed `.table-condensed` to `.table-sm` for consistency.
 - Added a new `.table-inverse` option.
 - Added a new `.table-reflow` option.
-- Added table header modifiers: `.thead-default` and `.thead-inverse`
+- Added table header modifiers: `.thead-default` and `.thead-inverse`.
+- Renamed contextual classes to have a `.table-`-prefix. Hence `.active`, `.success`, `.warning`, `.danger` and `.table-info` to `.table-active`, `.table-success`, `.table-warning`, `.table-danger` and `.table-info`.
 
 ### Forms
 
@@ -98,7 +99,7 @@ New to Bootstrap 4 is the Reboot, a new stylesheet that builds on Normalize with
 
 - Renamed `.btn-default` to `.btn-secondary`.
 - Dropped the `.btn-xs` class entirely as `.btn-sm` is proportionally much smaller than v3's.
-- The [stateful button](http://getbootstrap.com/javascript/#buttons-methods) feature of the `button.js` jQuery plugin has been dropped. This includes the `$().button(string)` and `$().button('reset')` methods. We advise using a tiny bit of custom JavaScript instead, which will have the benefit of behaving exactly the way you want it to.
+- The [stateful button](https://getbootstrap.com/javascript/#buttons-methods) feature of the `button.js` jQuery plugin has been dropped. This includes the `$().button(string)` and `$().button('reset')` methods. We advise using a tiny bit of custom JavaScript instead, which will have the benefit of behaving exactly the way you want it to.
   - Note that the other features of the plugin (button checkboxes, button radios, single-toggle buttons) have been retained in v4.
 
 ### Button group
@@ -111,6 +112,7 @@ New to Bootstrap 4 is the Reboot, a new stylesheet that builds on Normalize with
 - Simplified dropdown styles to no longer ship with upward or downward facing arrows attached to the dropdown menu.
 - Dropdowns can be built with `<div>`s or `<ul>`s now.
 - Rebuilt dropdown styles and markup to provide easy, built-in support for `<a>` and `<button>` based dropdown items.
+- Renamed `.divider` to `.dropdown-divider`.
 - Dropdown items now require `.dropdown-item`.
 - Dropdown toggles no longer require an explicit `<span class="caret"></span>`; this is now provided automatically via CSS's `::after` on `.dropdown-toggle`.
 
@@ -127,7 +129,7 @@ New to Bootstrap 4 is the Reboot, a new stylesheet that builds on Normalize with
 
 ### Modal
 
-- The `remote` option (which could be used to automatically load and inject external content into a modal) and the corresponding `loaded.bs.modal` event were removed. We recommend instead using client-side templating or a data binding framework, or calling [jQuery.load](http://api.jquery.com/load/) yourself.
+- The `remote` option (which could be used to automatically load and inject external content into a modal) and the corresponding `loaded.bs.modal` event were removed. We recommend instead using client-side templating or a data binding framework, or calling [jQuery.load](https://api.jquery.com/load/) yourself.
 
 ### Navs
 
@@ -161,8 +163,9 @@ Dropped entirely for the new card component.
 
 - `.panel` to `.card`
 - `.panel-default` removed and no replacement
+- `.panel-group` removed and no replacement. `.card-group` is not a replacement, it is different.
 - `.panel-heading` to `.card-header`
-- `.panel-title` to `.card-header`. Depending on the desired look, you may also want to use [heading elements or classes]({{ site.baseurl }}/content/typography/#headings) (e.g. `<h3>`, `.h3`) or bold elements or classes (e.g. `<strong>`, `<b>`, [`.font-weight-bold`]({{ site.baseurl }}/components/utilities/#font-weight-and-italics)). Note that `.card-title`, while similarly named, produces a different look than `.panel-title`.
+- `.panel-title` to `.card-header`. Depending on the desired look, you may also want to use [heading elements or classes]({{ site.baseurl }}/content/typography/#headings) (e.g. `<h3>`, `.h3`) or bold elements or classes (e.g. `<strong>`, `<b>`, [`.font-weight-bold`]({{ site.baseurl }}/utilities/typography/#font-weight-and-italics)). Note that `.card-title`, while similarly named, produces a different look than `.panel-title`.
 - `.panel-body` to `.card-block`
 - `.panel-footer` to `.card-footer`
 - `.panel-primary` to `.card-primary` and `.card-inverse` (or use `.bg-primary` on `.card-header`)
@@ -171,15 +174,19 @@ Dropped entirely for the new card component.
 - `.panel-warning` to `.card-warning` and `.card-inverse` (or use `.bg-warning` on `.card-header`)
 - `.panel-danger` to `.card-danger` and `.card-inverse` (or use `.bg-danger` on `.card-header`)
 
+### Tooltips
+
+- Removed support for `auto` placement options.
+
 ### Carousel
 
 - Renamed `.item` to `.carousel-item`.
 
 ### Utilities
 
-- Added `.pull-{xs,sm,md,lg,xl}-{left,right,none}` classes for responsive floats and removed `.pull-left` and `.pull-right` since they're redundant to `.pull-xs-left` and `.pull-xs-right`.
+- Added `.float-{xs,sm,md,lg,xl}-{left,right,none}` classes for responsive floats and removed `.pull-left` and `.pull-right` since they're redundant to `.float-xs-left` and `.float-xs-right`.
 - Added responsive variations to our text alignment classes `.text-{xs,sm,md,lg,xl}-{left,center,right}` and removed the redundant `.text-{left,center,right}` utilities as they are the same as the `xs` variation.
-- Dropped `.center-block` for the new `.m-x-auto` class.
+- Dropped `.center-block` for the new `.mx-auto` class.
 
 ### Vendor prefix mixins
 Bootstrap 3's [vendor prefix](http://webdesign.about.com/od/css/a/css-vendor-prefixes.htm) mixins, which were deprecated in v3.2.0, have been removed in Bootstrap 4. Since we use [Autoprefixer](https://github.com/postcss/autoprefixer), they're no longer necessary.