Merge branch 'v4-dev' into v4-center-utils

diff --cc docs/migration.md
index 05f15a28f66a87f7ef27053d2c04e4922bbf6b32,45f290dcbc20ac8e9451434cf5f4311ac3fd4724..774dd1166feaeddee9858a1b915de3848b1c18e3
--- 1/docs/migration.md
--- 2/docs/migration.md
+++ b/docs/migration.md
@@@ -154,9 -154,8 +154,9 @@@ Dropped entirely for the new card compo
  
  ### Utilities
  
- - Added `.pull-{xs,sm,md,lg,xl}-{left,right,none}` classes for responsive floats.
- - Removed `.pull-left` and `.pull-right` since they're redundant to `.pull-xs-left` and `.pull-xs-right`.
+ - 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 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.
  
  ### 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.