Merge branch 'master' into v4

Conflicts:
	_config.yml
	dist/css/bootstrap-theme.css
	dist/css/bootstrap-theme.css.map
	dist/css/bootstrap-theme.min.css
	dist/css/bootstrap.css
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	dist/js/bootstrap.min.js
	docs/_includes/components/thumbnails.html
	docs/_includes/css/forms.html
	docs/_includes/css/grid.html
	docs/_includes/customizer-variables.html
	docs/_includes/footer.html
	docs/_includes/getting-started/download.html
	docs/_includes/getting-started/template.html
	docs/_includes/js/overview.html
	docs/_includes/js/popovers.html
	docs/_includes/js/tooltips.html
	docs/assets/css/docs.min.css
	docs/assets/js/customize.min.js
	docs/assets/js/raw-files.min.js
	docs/assets/js/src/customizer.js
	docs/dist/css/bootstrap-theme.css
	docs/dist/css/bootstrap-theme.css.map
	docs/dist/css/bootstrap-theme.min.css
	docs/dist/css/bootstrap.css
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css
	docs/dist/js/bootstrap.js
	docs/dist/js/bootstrap.min.js
	docs/examples/navbar-fixed-top/index.html
	docs/examples/navbar-static-top/index.html
	docs/examples/non-responsive/index.html
	docs/examples/theme/index.html
	grunt/configBridge.json
	less/alerts.less
	less/badges.less
	less/jumbotron.less
	less/panels.less
	less/tables.less
	less/theme.less
	less/variables.less
	package.json
	scss/_button-group.scss
	scss/_buttons.scss
	scss/_forms.scss

docs/_data/browser-bugs.yml

@@ -98,16 +98,6 @@
   origin: >
     Bootstrap#12078
 
--
-  browser: >
-    Chrome
-  summary: >
-    `<input type="password">` sporadically causes bad widths on floated elements.
-  upstream_bug: >
-    Chromium#377346
-  origin: >
-    Bootstrap#13892
-
 -
   browser: >
     Chrome
@@ -118,6 +108,16 @@
   origin: >
     Bootstrap#14409
 
+-
+  browser: >
+    Chrome (Windows & Linux)
+  summary: >
+    Animation glitch when returning to inactive tab after animations occurred while tab was hidden.
+  upstream_bug: >
+    Chromium#449180
+  origin: >
+    Bootstrap#15298
+
 -
   browser: >
     Safari (OS X)
@@ -156,7 +156,7 @@
   summary: >
     Small font size when printing webpage with fixed-width `.container`.
   upstream_bug: >
-    WebKit#138192
+    WebKit#138192, Safari#19435018
   origin: >
     Bootstrap#14868
 
@@ -166,7 +166,7 @@
   summary: >
     Alpha linear-gradient has dark line at its edge.
   upstream_bug: >
-    WebKit#139803  
+    WebKit#139803, Safari#19434933
   origin: >
     Bootstrap#15205
 
@@ -196,6 +196,6 @@
   summary: >
     `display: block` causes text of temporal `<input>`s to become vertically misaligned
   upstream_bug: >
-    WebKit#139848
+    WebKit#139848, Safari#19434878
   origin: >
     Bootstrap#11266, Bootstrap#13098