Merge branch 'v4-dev' into modal_input_autofocus_keyboard_focus

* v4-dev: (56 commits)
  Remove unnecessary brackets for consistency (twbs#27966)
  Fix Typo on docs (twbs#27962)
  Add a few more redirects.
  Remove wrapping paragraph in readme (twbs#27948)
  Configurable display utility classes (twbs#27917)
  Fix custom select font sizes (twbs#27929)
  Match input font size for `.input-group-text` (twbs#27941)
  reboot: Fix comment (twbs#27937)
  Fix form-feedback-icon-invalid color (twbs#27935)
  toasts: mention that positioning is manual. (twbs#27931)
  stretched-link.md: fix typo (twbs#27918)
  Add Open Collective to header (twbs#27916)
  Add horizontal card example (twbs#27906)
  getSelectorFromElement return null on bad selectors (twbs#27912)
  versions: sort from newer to older. (twbs#27898)
  Fix 4:3 embed (twbs#27910)
  Simplify card group css (twbs#27901)
  Blacklist border-radius property (use mixin instead) (twbs#27900)
  move to 4.2
  bootstrap-stack.svg: remove unneeded space.
  ...

.stylelintrc

@@ -261,7 +261,14 @@
       "fill",
       "stroke"
     ],
-    "property-blacklist": ["transition"],
+    "property-blacklist": [
+      "border-radius",
+      "border-top-left-radius",
+      "border-top-right-radius",
+      "border-bottom-right-radius",
+      "border-bottom-left-radius",
+      "transition"
+    ],
     "property-no-vendor-prefix": true,
     "rule-empty-line-before": null,
     "scss/at-function-named-arguments": "never",

Gemfile.lock

@@ -4,7 +4,7 @@ GEM
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.3)
+    concurrent-ruby (1.1.4)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -46,17 +46,17 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
-    mini_portile2 (2.3.0)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.5-x64-mingw32)
-      mini_portile2 (~> 2.3.0)
+    mini_portile2 (2.4.0)
+    nokogiri (1.9.0)
+      mini_portile2 (~> 2.4.0)
+    nokogiri (1.9.0-x64-mingw32)
+      mini_portile2 (~> 2.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (3.0.3)
     rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
     rouge (3.3.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
@@ -79,4 +79,4 @@ DEPENDENCIES
   wdm (~> 0.1.1)
 
 BUNDLED WITH
-   1.17.1
+   1.17.2

README.md

@@ -1,24 +1,24 @@
 <p align="center">
   <a href="https://getbootstrap.com/">
-    <img src="https://getbootstrap.com/docs/4.1/assets/brand/bootstrap-solid.svg" alt="Bootstrap logo" width=72 height=72>
+    <img src="https://getbootstrap.com/docs/4.2/assets/brand/bootstrap-solid.svg" alt="Bootstrap logo" width="72" height="72">
   </a>
+</p>
+
+<h3 align="center">Bootstrap</h3>
 
-  <h3 align="center">Bootstrap</h3>
-
-  <p align="center">
-    Sleek, intuitive, and powerful front-end framework for faster and easier web development.
-    <br>
-    <a href="https://getbootstrap.com/docs/4.1/"><strong>Explore Bootstrap docs »</strong></a>
-    <br>
-    <br>
-    <a href="https://github.com/twbs/bootstrap/issues/new?template=bug.md">Report bug</a>
-    ·
-    <a href="https://github.com/twbs/bootstrap/issues/new?template=feature.md&labels=feature">Request feature</a>
-    ·
-    <a href="https://themes.getbootstrap.com/">Themes</a>
-    ·
-    <a href="https://blog.getbootstrap.com/">Blog</a>
-  </p>
+<p align="center">
+  Sleek, intuitive, and powerful front-end framework for faster and easier web development.
+  <br>
+  <a href="https://getbootstrap.com/docs/4.2/"><strong>Explore Bootstrap docs »</strong></a>
+  <br>
+  <br>
+  <a href="https://github.com/twbs/bootstrap/issues/new?template=bug.md">Report bug</a>
+  ·
+  <a href="https://github.com/twbs/bootstrap/issues/new?template=feature.md&labels=feature">Request feature</a>
+  ·
+  <a href="https://themes.getbootstrap.com/">Themes</a>
+  ·
+  <a href="https://blog.getbootstrap.com/">Blog</a>
 </p>
 
 
@@ -41,14 +41,14 @@
 
 Several quick start options are available:
 
-- [Download the latest release.](https://github.com/twbs/bootstrap/archive/v4.1.3.zip)
+- [Download the latest release.](https://github.com/twbs/bootstrap/archive/v4.2.1.zip)
 - Clone the repo: `git clone https://github.com/twbs/bootstrap.git`
 - Install with [npm](https://www.npmjs.com/): `npm install bootstrap`
-- Install with [yarn](https://yarnpkg.com/): `yarn add bootstrap@4.1.3`
-- Install with [Composer](https://getcomposer.org/): `composer require twbs/bootstrap:4.1.3`
+- Install with [yarn](https://yarnpkg.com/): `yarn add bootstrap@4.2.1`
+- Install with [Composer](https://getcomposer.org/): `composer require twbs/bootstrap:4.2.1`
 - Install with [NuGet](https://www.nuget.org/): CSS: `Install-Package bootstrap` Sass: `Install-Package bootstrap.sass`
 
-Read the [Getting started page](https://getbootstrap.com/docs/4.1/getting-started/introduction/) for information on the framework contents, templates and examples, and more.
+Read the [Getting started page](https://getbootstrap.com/docs/4.2/getting-started/introduction/) for information on the framework contents, templates and examples, and more.
 
 
 ## Status
@@ -113,11 +113,11 @@ Have a bug or a feature request? Please first read the [issue guidelines](https:
 
 Bootstrap's documentation, included in this repo in the root directory, is built with [Jekyll](https://jekyllrb.com/) and publicly hosted on GitHub Pages at <https://getbootstrap.com/>. The docs may also be run locally.
 
-Documentation search is powered by [Algolia's DocSearch](https://community.algolia.com/docsearch/). Working on our search? Be sure to set `debug: true` in `site/docs/4.1/assets/js/src/search.js` file.
+Documentation search is powered by [Algolia's DocSearch](https://community.algolia.com/docsearch/). Working on our search? Be sure to set `debug: true` in `site/docs/4.2/assets/js/src/search.js` file.
 
 ### Running documentation locally
 
-1. Run through the [tooling setup](https://getbootstrap.com/docs/4.1/getting-started/build-tools/#tooling-setup) to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
+1. Run through the [tooling setup](https://getbootstrap.com/docs/4.2/getting-started/build-tools/#tooling-setup) to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
 2. Run `npm install` to install Node.js dependencies.
 3. Run `npm start` to compile CSS and JavaScript files, generate our docs, and watch for changes.
 4. Open `http://localhost:9001` in your browser, and voilà.
@@ -128,7 +128,9 @@ Learn more about using Jekyll by reading its [documentation](https://jekyllrb.co
 
 - For v2.3.2: <https://getbootstrap.com/2.3.2/>
 - For v3.3.x: <https://getbootstrap.com/docs/3.3/>
+- For v3.4.0: <https://getbootstrap.com/docs/3.4/>
 - For v4.0.x: <https://getbootstrap.com/docs/4.0/>
+- For v4.1.x: <https://getbootstrap.com/docs/4.1/>
 
 [Previous releases](https://github.com/twbs/bootstrap/releases) and their documentation are also available for download.
 

_config.yml

@@ -17,7 +17,7 @@ baseurl:        ""
 url:            "https://getbootstrap.com"
 encoding:       UTF-8
 exclude:
-  - docs/4.1/assets/scss/
+  - docs/4.2/assets/scss/
 
 plugins:
   - jekyll-redirect-from
@@ -29,31 +29,32 @@ title:              Bootstrap
 description:        "The most popular HTML, CSS, and JS library in the world."
 twitter:            getbootstrap
 authors:            "Mark Otto, Jacob Thornton, and Bootstrap contributors"
-social_image_path:  /docs/4.1/assets/brand/bootstrap-social.png
-social_logo_path:   /docs/4.1/assets/brand/bootstrap-social-logo.png
+social_image_path:  /docs/4.2/assets/brand/bootstrap-social.png
+social_logo_path:   /docs/4.2/assets/brand/bootstrap-social-logo.png
 
 # Custom variables
-current_version:      4.1.3
-current_ruby_version: 4.1.3
-docs_version:         4.1
+current_version:      4.2.1
+current_ruby_version: 4.2.1
+docs_version:         4.2
 repo:                 "https://github.com/twbs/bootstrap"
 slack:                "https://bootstrap-slack.herokuapp.com"
+opencollective:       "https://opencollective.com/bootstrap"
 blog:                 "https://blog.getbootstrap.com"
 expo:                 "https://expo.getbootstrap.com"
 themes:               "https://themes.getbootstrap.com"
 
 download:
-  source:           "https://github.com/twbs/bootstrap/archive/v4.1.3.zip"
-  dist:             "https://github.com/twbs/bootstrap/releases/download/v4.1.3/bootstrap-4.1.3-dist.zip"
+  source:           "https://github.com/twbs/bootstrap/archive/v4.2.1.zip"
+  dist:             "https://github.com/twbs/bootstrap/releases/download/v4.2.1/bootstrap-4.2.1-dist.zip"
 
 cdn:
   # See https://www.srihash.org for info on how to generate the hashes
-  css:              "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
-  css_hash:         "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
-  js:               "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
-  js_hash:          "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
-  js_bundle:        "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.bundle.min.js"
-  js_bundle_hash:   "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
+  css:              "https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css"
+  css_hash:         "sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS"
+  js:               "https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js"
+  js_hash:          "sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k"
+  js_bundle:        "https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.bundle.min.js"
+  js_bundle_hash:   "sha384-zDnhMsjVZfS3hiP7oCBRmfjkQC4fzxVxFhBx8Hkz2aZX8gEvA/jsP3eXRCvzTofP"
   jquery:           "https://code.jquery.com/jquery-3.3.1.slim.min.js"
   jquery_hash:      "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
   popper:           "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"