rake update[v4-dev]

Author: glebm

assets/stylesheets/bootstrap/_input-group.scss

@@ -40,9 +40,7 @@
 .input-group-addon,
 .input-group-btn,
 .input-group .form-control {
-  @if $enable-flex {
-    // do nothing
-  } @else {
+  @if not $enable-flex {
     display: table-cell;
   }
 
@@ -53,9 +51,7 @@
 
 .input-group-addon,
 .input-group-btn {
-  @if $enable-flex {
-    // do nothing
-  } @else {
+  @if not $enable-flex {
     width: 1%;
   }
   white-space: nowrap;

assets/stylesheets/bootstrap/_utilities.scss

@@ -1,8 +1,9 @@
 @import "utilities/background";
 @import "utilities/clearfix";
+@import "utilities/display";
+@import "utilities/flex";
 @import "utilities/pulls";
 @import "utilities/screenreaders";
 @import "utilities/spacing";
 @import "utilities/text";
 @import "utilities/visibility";
-@import "utilities/flex";

assets/stylesheets/bootstrap/mixins/_grid-framework.scss

@@ -36,7 +36,7 @@
 
       // `$columns - 1` because offsetting by the width of an entire row isn't possible
       @for $i from 0 through ($columns - 1) {
-        @if $breakpoint-counter != 1 or $i != 0 { // Avoid emitting useless .col-xs-offset-0
+        @if $breakpoint-counter != 1 or $i != 0 { // Avoid emitting useless .offset-xs-0
           .offset-#{$breakpoint}-#{$i} {
             @include make-col-modifier(offset, $i, $columns)
           }

assets/stylesheets/bootstrap/utilities/_display.scss

@@ -0,0 +1,13 @@
+//
+// Display utilities
+//
+
+.d-block {
+  display: block !important;
+}
+.d-inline-block {
+  display: inline-block !important;
+}
+.d-inline {
+  display: inline !important;
+}

assets/stylesheets/bootstrap/utilities/_spacing.scss

@@ -1,3 +1,7 @@
+// Width
+
+.w-100 { width: 100% !important; }
+
 // Margin and Padding
 
 .m-x-auto {

lib/bootstrap/version.rb

@@ -1,4 +1,4 @@
 module Bootstrap
   VERSION       = '4.0.0.alpha3'
-  BOOTSTRAP_SHA = 'fcb41c7afddc60e65218eaa7d4c95a76bc22380d'
+  BOOTSTRAP_SHA = '2cc75671e143587ace7efaf79c5b3350a711d57d'
 end