Merge remote-tracking branch 'refs/remotes/twbs/v4-dev' into v4-dev

.babelrc

-{
-  "presets": [
-    [
-      "es2015",
-      {
-        "loose": true,
-        "modules": false
-      }
-    ]
-  ],
-  "plugins": [
-    "transform-es2015-modules-strip"
-  ]
-}

.babelrc.js

+module.exports = {
+  presets: [
+    [
+      'env',
+      {
+        loose: true,
+        modules: false,
+        exclude: ['transform-es2015-typeof-symbol']
+      }
+    ]
+  ],
+  plugins: [
+    process.env.ROLLUP && 'external-helpers',
+    process.env.PLUGINS && 'transform-es2015-modules-strip'
+  ].filter(Boolean)
+};

.gitattributes

@@ -4,10 +4,10 @@
 *.js    text eol=lf
 *.json  text eol=lf
 *.md    text eol=lf
-*.py    text eol=lf
 *.rb    text eol=lf
 *.scss  text eol=lf
 *.svg   text eol=lf
+*.txt   text eol=lf
 *.yml   text eol=lf
 # Don't diff or textually merge source maps
 *.map   binary

.github/CONTRIBUTING.md

@@ -42,7 +42,7 @@ Our bug tracker utilizes several labels to help organize and identify issues. He
 - `docs` - Issues for improving or updating our documentation.
 - `examples` - Issues involving the example templates included in our docs.
 - `feature` - Issues asking for a new feature to be added, or an existing one to be extended or modified. New features require a minor version bump (e.g., `v3.0.0` to `v3.1.0`).
-- `grunt` - Issues with our build system, which is used to run all our tests, concatenate and compile source files, and more.
+- `build` - Issues with our build system, which is used to run all our tests, concatenate and compile source files, and more.
 - `help wanted` - Issues we need or would love help from the community to resolve.
 - `js` - Issues stemming from our compiled or source JavaScript files.
 - `meta` - Issues with the project itself or our GitHub repository.
@@ -57,7 +57,7 @@ Good bug reports are extremely helpful, so thanks!
 
 Guidelines for bug reports:
 
-0. **Validate and lint your code** — [validate your HTML](https://html5.validator.nu)
+0. **Validate and lint your code** — [validate your HTML](https://html5.validator.nu/)
    and [lint your HTML](https://github.com/twbs/bootlint) to ensure your
    problem isn't caused by a simple error in your own code.
 
@@ -151,7 +151,7 @@ documentation source files and is managed separately by the Bootstrap Core Team.
 Adhering to the following process is the best way to get your work
 included in the project:
 
-1. [Fork](https://help.github.com/fork-a-repo/) the project, clone your fork,
+1. [Fork](https://help.github.com/articles/fork-a-repo/) the project, clone your fork,
    and configure the remotes:
 
    ```bash
@@ -180,7 +180,7 @@ included in the project:
 4. Commit your changes in logical chunks. Please adhere to these [git commit
    message guidelines](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html)
    or your code is unlikely be merged into the main project. Use Git's
-   [interactive rebase](https://help.github.com/articles/interactive-rebase)
+   [interactive rebase](https://help.github.com/articles/about-git-rebase/)
    feature to tidy up your commits before making them public.
 
 5. Locally merge (or rebase) the upstream development branch into your topic branch:
@@ -195,7 +195,7 @@ included in the project:
    git push origin <topic-branch-name>
    ```
 
-7. [Open a Pull Request](https://help.github.com/articles/using-pull-requests/)
+7. [Open a Pull Request](https://help.github.com/articles/about-pull-requests/)
     with a clear title and description against the `master` branch.
 
 **IMPORTANT**: By submitting a patch, you agree to allow the project owners to
@@ -211,7 +211,7 @@ includes code changes) and under the terms of the
 * Push the revised version to your pull request's branch and post a comment on the pull request saying that you've fixed the problem(s). One of the Bootstrap Core Team members will then come along and reopen your pull request.
 * Or you can just open a new pull request for your revised version.
 
-[@twbs-savage](https://github.com/twbs-savage) is a Bootstrap bot that automatically runs cross-browser tests (via [Sauce](https://saucelabs.com) and Travis CI) on JavaScript pull requests. Savage will leave a comment on pull requests stating whether cross-browser JS tests passed or failed, with a link to the full Travis build details. If your pull request fails, check the Travis log to see which browser + OS combinations failed. Each browser test in the Travis log includes a link to a Sauce page with details about the test. On those details pages, you can watch a screencast of the test run to see exactly which unit tests failed.
+[@twbs-savage](https://github.com/twbs-savage) is a Bootstrap bot that automatically runs cross-browser tests (via [Sauce](https://saucelabs.com/) and Travis CI) on JavaScript pull requests. Savage will leave a comment on pull requests stating whether cross-browser JS tests passed or failed, with a link to the full Travis build details. If your pull request fails, check the Travis log to see which browser + OS combinations failed. Each browser test in the Travis log includes a link to a Sauce page with details about the test. On those details pages, you can watch a screencast of the test run to see exactly which unit tests failed.
 
 
 ## Code guidelines

.github/ISSUE_TEMPLATE.md

 Before opening an issue:
 
 - [Search for duplicate or closed issues](https://github.com/twbs/bootstrap/issues?utf8=%E2%9C%93&q=is%3Aissue)
-- [Validate](https://validator.w3.org/nu/) and [lint](https://github.com/twbs/bootlint#in-the-browser) any HTML to avoid common problems
+- [Validate](https://html5.validator.nu/) and [lint](https://github.com/twbs/bootlint#in-the-browser) any HTML to avoid common problems
 - Prepare a [reduced test case](https://css-tricks.com/reduced-test-cases/) for any bugs
 - Read the [contributing guidelines](https://github.com/twbs/bootstrap/blob/master/CONTRIBUTING.md)
 
@@ -14,7 +14,7 @@ When reporting a bug, include:
 
 - Operating system and version (Windows, Mac OS X, Android, iOS, Win10 Mobile)
 - Browser and version (Chrome, Firefox, Safari, IE, MS Edge, Opera 15+, Android Browser)
-- Reduced test cases and potential fixes using [JS Bin](https://jsbin.com)
+- Reduced test cases and potential fixes using [JS Bin](https://jsbin.com/)
 
 When suggesting a feature, include:
 

.gitignore

@@ -38,15 +38,9 @@ Thumbs.db
 .komodotools
 *.komodoproject
 
-# SCSS-Lint
-scss-lint-report.xml
-
-# grunt-contrib-sass cache
-.sass-cache
-
-# Jekyll metadata
+# Jekyll metadata and extra config file for `github` script
 docs/.jekyll-metadata
+twbsconfig.yml
 
 # Folders to ignore
-bower_components
 node_modules

.hound.yml

 fail_on_violations: true
 
+stylelint:
+  config_file: build/.stylelintrc
+
 scss:
-  config_file: .scss-lint.yml
+  enabled: false
 
 jshint:
   enabled: false

.scss-lint.yml

-# Default application configuration that all configurations inherit from.
-scss_files:
-  - "scss/**/*.scss"
-  - "docs/assets/scss/**/*.scss"
-
-plugin_directories: ['.scss-linters']
-
-# List of gem names to load custom linters from (make sure they are already
-# installed)
-plugin_gems: []
-
-# Default severity of all linters.
-severity: warning
-
-linters:
-  BangFormat:
-    enabled: true
-    space_before_bang: true
-    space_after_bang: false
-
-  BemDepth:
-    enabled: false
-    max_elements: 1
-
-  BorderZero:
-    enabled: true
-    convention: zero # or `none`
-
-  ChainedClasses:
-    enabled: false
-
-  ColorKeyword:
-    enabled: true
-
-  ColorVariable:
-    enabled: false
-
-  Comment:
-    enabled: true
-    exclude:
-      - scss/bootstrap.scss
-    style: silent
-
-  DebugStatement:
-    enabled: true
-
-  DeclarationOrder:
-    enabled: false
-
-  DisableLinterReason:
-    enabled: false
-
-  DuplicateProperty:
-    enabled: true
-
-  ElsePlacement:
-    enabled: true
-    style: same_line # or 'new_line'
-
-  EmptyLineBetweenBlocks:
-    enabled: false
-    ignore_single_line_blocks: true
-
-  EmptyRule:
-    enabled: true
-
-  ExtendDirective:
-    enabled: false
-
-  FinalNewline:
-    enabled: true
-    present: true
-
-  HexLength:
-    enabled: true
-    style: short # or 'long'
-
-  HexNotation:
-    enabled: true
-    style: lowercase # or 'uppercase'
-
-  HexValidation:
-    enabled: true
-
-  IdSelector:
-    enabled: true
-
-  ImportantRule:
-    enabled: false
-
-  ImportPath:
-    enabled: true
-    leading_underscore: false
-    filename_extension: false
-
-  Indentation:
-    enabled: true
-    allow_non_nested_indentation: false
-    character: space # or 'tab'
-    width: 2
-
-  LeadingZero:
-    enabled: true
-    style: exclude_zero # or 'include_zero'
-
-  MergeableSelector:
-    enabled: false
-    force_nesting: true
-
-  NameFormat:
-    enabled: true
-    allow_leading_underscore: true
-    convention: hyphenated_lowercase # or 'camel_case', or 'snake_case', or a regex pattern
-
-  NestingDepth:
-    enabled: true
-    max_depth: 5
-    ignore_parent_selectors: false
-
-  PlaceholderInExtend:
-    enabled: false
-
-  PropertyCount:
-    enabled: false
-    include_nested: false
-    max_properties: 10
-
-  PropertySortOrder:
-    enabled: true
-    ignore_unspecified: false
-    min_properties: 2
-    separate_groups: false
-    order:
-      - position
-      - top
-      - right
-      - bottom
-      - left
-      - z-index
-      - -webkit-box-sizing
-      - -moz-box-sizing
-      - box-sizing
-      - display
-      - flex
-      - flex-align
-      - flex-basis
-      - flex-direction
-      - flex-wrap
-      - flex-flow
-      - flex-grow
-      - flex-order
-      - flex-pack
-      - align-items
-      - align-self
-      - justify-content
-      - order
-      - float
-      - width
-      - min-width
-      - max-width
-      - height
-      - min-height
-      - max-height
-      - padding
-      - padding-top
-      - padding-right
-      - padding-bottom
-      - padding-left
-      - margin
-      - margin-top
-      - margin-right
-      - margin-bottom
-      - margin-left
-      - overflow
-      - overflow-x
-      - overflow-y
-      - -webkit-overflow-scrolling
-      - -ms-overflow-x
-      - -ms-overflow-y
-      - -ms-overflow-style
-      - clip
-      - clear
-      - font
-      - font-family
-      - font-size
-      - font-style
-      - font-weight
-      - font-variant
-      - font-size-adjust
-      - font-stretch
-      - font-effect
-      - font-emphasize
-      - font-emphasize-position
-      - font-emphasize-style
-      - font-smooth
-      - -webkit-hyphens
-      - -moz-hyphens
-      - hyphens
-      - line-height
-      - color
-      - text-align
-      - -webkit-text-align-last
-      - -moz-text-align-last
-      - -ms-text-align-last
-      - text-align-last
-      - text-emphasis
-      - text-emphasis-color
-      - text-emphasis-style
-      - text-emphasis-position
-      - text-decoration
-      - text-indent
-      - text-justify
-      - text-outline
-      - -ms-text-overflow
-      - text-overflow
-      - text-overflow-ellipsis
-      - text-overflow-mode
-      - text-shadow
-      - text-transform
-      - text-wrap
-      - -webkit-text-size-adjust
-      - -ms-text-size-adjust
-      - letter-spacing
-      - -ms-word-break
-      - word-break
-      - word-spacing
-      - -ms-word-wrap
-      - word-wrap
-      - overflow-wrap
-      - -moz-tab-size
-      - -o-tab-size
-      - tab-size
-      - white-space
-      - vertical-align
-      - list-style
-      - list-style-position
-      - list-style-type
-      - list-style-image
-      - pointer-events
-      - -ms-touch-action
-      - touch-action
-      - cursor
-      - visibility
-      - zoom
-      - table-layout
-      - empty-cells
-      - caption-side
-      - border-spacing
-      - border-collapse
-      - content
-      - quotes
-      - counter-reset
-      - counter-increment
-      - resize
-      - -webkit-user-select
-      - -moz-user-select
-      - -ms-user-select
-      - -o-user-select
-      - user-select
-      - nav-index
-      - nav-up
-      - nav-right
-      - nav-down
-      - nav-left
-      - background
-      - background-color
-      - background-image
-      - -ms-filter:\\'progid:DXImageTransform.Microsoft.gradient
-      - filter:progid:DXImageTransform.Microsoft.gradient
-      - filter:progid:DXImageTransform.Microsoft.AlphaImageLoader
-      - filter
-      - background-repeat
-      - background-attachment
-      - background-position
-      - background-position-x
-      - background-position-y
-      - -webkit-background-clip
-      - -moz-background-clip
-      - background-clip
-      - background-origin
-      - -webkit-background-size
-      - -moz-background-size
-      - -o-background-size
-      - background-size
-      - border
-      - border-color
-      - border-style
-      - border-width
-      - border-top
-      - border-top-color
-      - border-top-style
-      - border-top-width
-      - border-right
-      - border-right-color
-      - border-right-style
-      - border-right-width
-      - border-bottom
-      - border-bottom-color
-      - border-bottom-style
-      - border-bottom-width
-      - border-left
-      - border-left-color
-      - border-left-style
-      - border-left-width
-      - border-radius
-      - border-top-left-radius
-      - border-top-right-radius
-      - border-bottom-right-radius
-      - border-bottom-left-radius
-      - -webkit-border-image
-      - -moz-border-image
-      - -o-border-image
-      - border-image
-      - -webkit-border-image-source
-      - -moz-border-image-source
-      - -o-border-image-source
-      - border-image-source
-      - -webkit-border-image-slice
-      - -moz-border-image-slice
-      - -o-border-image-slice
-      - border-image-slice
-      - -webkit-border-image-width
-      - -moz-border-image-width
-      - -o-border-image-width
-      - border-image-width
-      - -webkit-border-image-outset
-      - -moz-border-image-outset
-      - -o-border-image-outset
-      - border-image-outset
-      - -webkit-border-image-repeat
-      - -moz-border-image-repeat
-      - -o-border-image-repeat
-      - border-image-repeat
-      - outline
-      - outline-width
-      - outline-style
-      - outline-color
-      - outline-offset
-      - -webkit-box-shadow
-      - -moz-box-shadow
-      - box-shadow
-      - filter:progid:DXImageTransform.Microsoft.Alpha(Opacity
-      - -ms-filter:\\'progid:DXImageTransform.Microsoft.Alpha
-      - opacity
-      - -ms-interpolation-mode
-      - -webkit-transition
-      - -moz-transition
-      - -ms-transition
-      - -o-transition
-      - transition
-      - -webkit-transition-delay
-      - -moz-transition-delay
-      - -ms-transition-delay
-      - -o-transition-delay
-      - transition-delay
-      - -webkit-transition-timing-function
-      - -moz-transition-timing-function
-      - -ms-transition-timing-function
-      - -o-transition-timing-function
-      - transition-timing-function
-      - -webkit-transition-duration
-      - -moz-transition-duration
-      - -ms-transition-duration
-      - -o-transition-duration
-      - transition-duration
-      - -webkit-transition-property
-      - -moz-transition-property
-      - -ms-transition-property
-      - -o-transition-property
-      - transition-property
-      - -webkit-transform
-      - -moz-transform
-      - -ms-transform
-      - -o-transform
-      - transform
-      - -webkit-transform-origin
-      - -moz-transform-origin
-      - -ms-transform-origin
-      - -o-transform-origin
-      - transform-origin
-      - -webkit-animation
-      - -moz-animation
-      - -ms-animation
-      - -o-animation
-      - animation
-      - -webkit-animation-name
-      - -moz-animation-name
-      - -ms-animation-name
-      - -o-animation-name
-      - animation-name
-      - -webkit-animation-duration
-      - -moz-animation-duration
-      - -ms-animation-duration
-      - -o-animation-duration
-      - animation-duration
-      - -webkit-animation-play-state
-      - -moz-animation-play-state
-      - -ms-animation-play-state
-      - -o-animation-play-state
-      - animation-play-state
-      - -webkit-animation-timing-function
-      - -moz-animation-timing-function
-      - -ms-animation-timing-function
-      - -o-animation-timing-function
-      - animation-timing-function
-      - -webkit-animation-delay
-      - -moz-animation-delay
-      - -ms-animation-delay
-      - -o-animation-delay
-      - animation-delay
-      - -webkit-animation-iteration-count
-      - -moz-animation-iteration-count
-      - -ms-animation-iteration-count
-      - -o-animation-iteration-count
-      - animation-iteration-count
-      - -webkit-animation-direction
-      - -moz-animation-direction
-      - -ms-animation-direction
-      - -o-animation-direction
-
-
-  PropertySpelling:
-    enabled: true
-    extra_properties: []
-    disabled_properties: []
-
-  PropertyUnits:
-    enabled: true
-    global: [
-      'ch', 'em', 'ex', 'rem',                 # Font-relative lengths
-      'cm', 'in', 'mm', 'pc', 'pt', 'px', 'q', # Absolute lengths
-      'vh', 'vw', 'vmin', 'vmax',              # Viewport-percentage lengths
-      'deg', 'grad', 'rad', 'turn',            # Angle
-      'ms', 's',                               # Duration
-      'Hz', 'kHz',                             # Frequency
-      'dpi', 'dpcm', 'dppx',                   # Resolution
-      '%']                                     # Other
-    properties: {}
-
-  PseudoElement:
-    enabled: true
-
-  QualifyingElement:
-    enabled: true
-    allow_element_with_attribute: false
-    allow_element_with_class: false
-    allow_element_with_id: false
-
-  SelectorDepth:
-    enabled: true
-    max_depth: 4
-
-  SelectorFormat:
-    enabled: false
-    convention: hyphenated_lowercase # or 'strict_BEM', or 'hyphenated_BEM', or 'snake_case', or 'camel_case', or a regex pattern
-
-  Shorthand:
-    enabled: true
-    allowed_shorthands: [1, 2, 3, 4]
-
-  SingleLinePerProperty:
-    enabled: false
-    allow_single_line_rule_sets: true
-
-  SingleLinePerSelector:
-    enabled: false
-
-  SpaceAfterComma:
-    enabled: false
-    style: one_space # or 'no_space', or 'at_least_one_space'
-
-  SpaceAfterPropertyColon:
-    enabled: true
-    style: at_least_one_space # or 'no_space', or 'at_least_one_space', or 'aligned'
-
-  SpaceAfterPropertyName:
-    enabled: true
-
-  SpaceAfterVariableName:
-    enabled: true
-
-  SpaceAroundOperator:
-    enabled: true
-    style: one_space # or 'at_least_one_space', or 'no_space'
-
-  SpaceBeforeBrace:
-    enabled: true
-    style: space # or 'new_line'
-    allow_single_line_padding: true
-
-  SpaceBetweenParens:
-    enabled: true
-    spaces: 0
-
-  StringQuotes:
-    enabled: true
-    style: double_quotes # or double_quotes
-
-  TrailingSemicolon:
-    enabled: true
-
-  TrailingWhitespace:
-    enabled: true
-
-  TrailingZero:
-    enabled: false
-
-  TransitionAll:
-    enabled: false
-
-  UnnecessaryMantissa:
-    enabled: true
-
-  UnnecessaryParentReference:
-    enabled: true
-
-  UrlFormat:
-    enabled: true
-
-  UrlQuotes:
-    enabled: true
-
-  VariableForProperty:
-    enabled: false
-    properties: []
-
-  VendorPrefix:
-    enabled: true
-    identifier_list: base
-    additional_identifiers: []
-    excluded_identifiers: []
-
-  ZeroUnit:
-    enabled: true
-
-  Compass::*:
-    enabled: false

.travis.yml

@@ -4,31 +4,28 @@ language: node_js
 git:
   depth: 3
 node_js:
-  - "4"
+  - "6"
   - "8"
 before_install:
   - if [[ `npm -v` != 5* ]]; then npm install -g npm@5; fi
-  - "export TRAVIS_COMMIT_MSG=\"`git log --format=%B --no-merges -n 1`\""
-  - echo "$TRAVIS_COMMIT_MSG" | grep '\[skip browser\]'; export TWBS_DO_BROWSER=$?; true
 install:
   - bundle install --deployment --jobs=3 --retry=3
   - npm install
-script:
-  - npm test
-  - if [ "$TWBS_TEST" = browser -a "$SAUCE_ACCESS_KEY" ]; then npm run js-test-cloud; fi
 after_success:
   - if [ "$TRAVIS_REPO_SLUG" = twbs-savage/bootstrap ]; then npm run docs-upload-preview; fi
+stages:
+  - test
+  - name: browser
+    if: type = push
+jobs:
+  include:
+    - stage: browser
+      node_js: 8
+      script: if ! git log --format=%B --no-merges -n 1 | grep '\[skip browser\]'; then npm test && npm run js-test-cloud; fi
 cache:
   directories:
     - node_modules
     - vendor/bundle
-env:
-  - TWBS_TEST=core
-  - TWBS_TEST=browser
-matrix:
-  exclude:
-    - node_js: "4"
-      env: TWBS_TEST=browser
 notifications:
   slack: heybb:iz4wwosL0N0EdaX1gvgkU0NH
   webhooks:

Gemfile

 source 'https://rubygems.org'
 
 group :development, :test do
-  gem 'jekyll', '~> 3.4.5'
+  gem 'jekyll', '~> 3.6.0'
   gem 'jekyll-redirect-from', '~> 0.12.1'
   gem 'jekyll-sitemap', '~> 1.1.1'
-  gem 'jekyll-toc', '~> 0.3.0.pre1'
-  gem 'scss_lint', '~> 0.54.0'
+  gem 'jekyll-toc', '~> 0.3.0'
 end

Gemfile.lock

 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     colorator (1.1.0)
     ffi (1.9.18)
     ffi (1.9.18-x64-mingw32)
     forwardable-extended (2.6.0)
-    jekyll (3.4.5)
+    jekyll (3.6.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
-      kramdown (~> 1.3)
-      liquid (~> 3.0)
+      kramdown (~> 1.14)
+      liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
-      rouge (~> 1.7)
+      rouge (>= 1.7, < 3)
       safe_yaml (~> 1.0)
     jekyll-redirect-from (0.12.1)
       jekyll (~> 3.3)
@@ -24,45 +24,44 @@ GEM
       sass (~> 3.4)
     jekyll-sitemap (1.1.1)
       jekyll (~> 3.3)
-    jekyll-toc (0.3.0.pre1)
+    jekyll-toc (0.3.0)
       nokogiri (~> 1.6)
     jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
-    kramdown (1.14.0)
-    liquid (3.0.6)
+    kramdown (1.15.0)
+    liquid (4.0.0)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
-    mini_portile2 (2.2.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
-    nokogiri (1.8.0-x64-mingw32)
-      mini_portile2 (~> 2.2.0)
+    mini_portile2 (2.3.0)
+    nokogiri (1.8.1)
+      mini_portile2 (~> 2.3.0)
+    nokogiri (1.8.1-x64-mingw32)
+      mini_portile2 (~> 2.3.0)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
-    public_suffix (2.0.5)
-    rake (12.0.0)
+    public_suffix (3.0.0)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    rouge (1.11.1)
+    rouge (2.2.1)
     safe_yaml (1.0.4)
-    sass (3.4.25)
-    scss_lint (0.54.0)
-      rake (>= 0.9, < 13)
-      sass (~> 3.4.20)
+    sass (3.5.1)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
 
 PLATFORMS
   ruby
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (~> 3.4.5)
+  jekyll (~> 3.6.0)
   jekyll-redirect-from (~> 0.12.1)
   jekyll-sitemap (~> 1.1.1)
-  jekyll-toc (~> 0.3.0.pre1)
-  scss_lint (~> 0.54.0)
+  jekyll-toc (~> 0.3.0)
 
 BUNDLED WITH
-   1.15.1
+   1.15.4

Gruntfile.js

-/*!
- * Bootstrap's Gruntfile
- * https://getbootstrap.com
- * Copyright 2013-2017 The Bootstrap Authors
- * Copyright 2013-2017 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-module.exports = function (grunt) {
-  'use strict'
-
-  // Project configuration.
-  grunt.initConfig({
-    'saucelabs-qunit': {
-      all: {
-        options: {
-          build: process.env.TRAVIS_JOB_ID,
-          concurrency: 10,
-          maxRetries: 3,
-          maxPollRetries: 4,
-          urls: ['http://localhost:3000/js/tests/index.html?hidepassed'],
-          browsers: grunt.file.readYAML('build/sauce_browsers.yml')
-        }
-      }
-    }
-  })
-
-  grunt.loadNpmTasks('grunt-saucelabs')
-}

README.md

 <p align="center">
-  <a href="https://v4-alpha.getbootstrap.com">
-    <img src="http://v4-alpha.getbootstrap.com/assets/brand/bootstrap-solid.svg" width=72 height=72>
+  <a href="https://getbootstrap.com/">
+    <img src="https://getbootstrap.com/assets/brand/bootstrap-solid.svg" width=72 height=72>
   </a>
 
   <h3 align="center">Bootstrap</h3>
@@ -8,14 +8,14 @@
   <p align="center">
     Sleek, intuitive, and powerful front-end framework for faster and easier web development.
     <br>
-    <a href="https://v4-alpha.getbootstrap.com"><strong>Explore Bootstrap docs &raquo;</strong></a>
+    <a href="https://getbootstrap.com/docs/4.0/"><strong>Explore Bootstrap docs &raquo;</strong></a>
     <br>
     <br>
-    <a href="https://themes.getbootstrap.com">Bootstrap Themes</a>
+    <a href="https://themes.getbootstrap.com/">Bootstrap Themes</a>
     &middot;
-    <a href="https://jobs.getbootstrap.com">Job Board</a>
+    <a href="https://jobs.getbootstrap.com/">Job Board</a>
     &middot;
-    <a href="https://blog.getbootstrap.com">Blog</a>
+    <a href="https://blog.getbootstrap.com/">Blog</a>
   </p>
 </p>
 
@@ -38,23 +38,22 @@
 
 Several quick start options are available:
 
-- [Download the latest release.](https://github.com/twbs/bootstrap/archive/v4.0.0-alpha.6.zip)
+- [Download the latest release.](https://github.com/twbs/bootstrap/archive/v4.0.0-beta.zip)
 - Clone the repo: `git clone https://github.com/twbs/bootstrap.git`
-- Install with [npm](https://www.npmjs.com): `npm install bootstrap@4.0.0-alpha.6`
-- Install with [yarn](https://github.com/yarnpkg/yarn): `yarn add bootstrap@4.0.0-alpha.6`
-- Install with [Composer](https://getcomposer.org): `composer require twbs/bootstrap:4.0.0-alpha.6`
-- Install with [Bower](https://bower.io): `bower install bootstrap#v4.0.0-alpha.6`
-- Install with [NuGet](https://www.nuget.org): CSS: `Install-Package bootstrap -Pre` Sass: `Install-Package bootstrap.sass -Pre` (`-Pre` is only required until Bootstrap v4 has a stable release).
+- Install with [npm](https://www.npmjs.com/): `npm install bootstrap@4.0.0-beta`
+- Install with [yarn](https://yarnpkg.com/): `yarn add bootstrap@4.0.0-beta`
+- Install with [Composer](https://getcomposer.org/): `composer require twbs/bootstrap:4.0.0-beta`
+- Install with [NuGet](https://www.nuget.org/): CSS: `Install-Package bootstrap -Pre` Sass: `Install-Package bootstrap.sass -Pre` (`-Pre` is only required until Bootstrap v4 has a stable release).
 
 Read the [Getting started page](https://getbootstrap.com/getting-started/) for information on the framework contents, templates and examples, and more.
 
 ## Status
 
-[![Slack](https://bootstrap-slack.herokuapp.com/badge.svg)](https://bootstrap-slack.herokuapp.com)
-[![Bower](https://img.shields.io/bower/v/bootstrap.svg)](https://bower.io/search/?q=bootstrap)
+[![Slack](https://bootstrap-slack.herokuapp.com/badge.svg)](https://bootstrap-slack.herokuapp.com/)
 [![npm version](https://img.shields.io/npm/v/bootstrap.svg)](https://www.npmjs.com/package/bootstrap)
 [![Gem version](https://img.shields.io/gem/v/bootstrap.svg)](https://rubygems.org/gems/bootstrap)
 [![Build Status](https://img.shields.io/travis/twbs/bootstrap/v4-dev.svg)](https://travis-ci.org/twbs/bootstrap)
+[![peerDependencies Status](https://david-dm.org/twbs/bootstrap/peer-status.svg)](https://david-dm.org/twbs/bootstrap?type=peer)
 [![devDependency Status](https://img.shields.io/david/dev/twbs/bootstrap.svg)](https://david-dm.org/twbs/bootstrap?type=dev)
 [![Meteor Atmosphere](https://img.shields.io/badge/meteor-twbs%3Abootstrap-blue.svg)](https://atmospherejs.com/twbs/bootstrap)
 [![Packagist Prerelease](https://img.shields.io/packagist/vpre/twbs/bootstrap.svg)](https://packagist.org/packages/twbs/bootstrap)
@@ -95,15 +94,17 @@ Documentation search is powered by [Algolia's DocSearch](https://community.algol
 ### Running documentation locally
 
 1. Run through the [tooling setup](https://github.com/twbs/bootstrap/blob/v4-dev/docs/4.0/getting-started/build-tools.md#tooling-setup) to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
-2. Run `npm run test` (or a specific NPM script) to rebuild distributed CSS and JavaScript files, as well as our docs assets.
-3. From the root `/bootstrap` directory, run `bundle exec jekyll serve` in the command line.
-4. Open <http://localhost:9001> in your browser, and voilà.
+2. Run `npm install` to install Node.js dependencies.
+3. Run `npm run test` (or a specific NPM script) to rebuild distributed CSS and JavaScript files, as well as our docs assets.
+4. From the root `/bootstrap` directory, run `npm run docs-serve` in the command line.
+5. Open <http://localhost:9001> in your browser, and voilà.
 
 Learn more about using Jekyll by reading its [documentation](https://jekyllrb.com/docs/home/).
 
 ### Documentation for previous releases
 
-Documentation for v2.3.2 has been made available for the time being at <https://getbootstrap.com/2.3.2/> while folks transition to Bootstrap 3.
+- For v2.3.2: <https://getbootstrap.com/2.3.2/>
+- For v3.3.x: <https://getbootstrap.com/docs/3.3/>
 
 [Previous releases](https://github.com/twbs/bootstrap/releases) and their documentation are also available for download.
 
@@ -124,8 +125,8 @@ Editor preferences are available in the [editor config](https://github.com/twbs/
 Get updates on Bootstrap's development and chat with the project maintainers and community members.
 
 - Follow [@getbootstrap on Twitter](https://twitter.com/getbootstrap).
-- Read and subscribe to [The Official Bootstrap Blog](https://blog.getbootstrap.com).
-- Join [the official Slack room](https://bootstrap-slack.herokuapp.com).
+- Read and subscribe to [The Official Bootstrap Blog](https://blog.getbootstrap.com/).
+- Join [the official Slack room](https://bootstrap-slack.herokuapp.com/).
 - Chat with fellow Bootstrappers in IRC. On the `irc.freenode.net` server, in the `##bootstrap` channel.
 - Implementation help may be found at Stack Overflow (tagged [`bootstrap-4`](https://stackoverflow.com/questions/tagged/bootstrap-4)).
 - Developers should use the keyword `bootstrap` on packages which modify or add to the functionality of Bootstrap when distributing through [npm](https://www.npmjs.com/browse/keyword/bootstrap) or similar delivery mechanisms for maximum discoverability.
@@ -136,7 +137,7 @@ Get updates on Bootstrap's development and chat with the project maintainers and
 
 For transparency into our release cycle and in striving to maintain backward compatibility, Bootstrap is maintained under [the Semantic Versioning guidelines](http://semver.org/). Sometimes we screw up, but we'll adhere to those rules whenever possible.
 
-See [the Releases section of our GitHub project](https://github.com/twbs/bootstrap/releases) for changelogs for each release version of Bootstrap. Release announcement posts on [the official Bootstrap blog](https://blog.getbootstrap.com) contain summaries of the most noteworthy changes made in each release.
+See [the Releases section of our GitHub project](https://github.com/twbs/bootstrap/releases) for changelogs for each release version of Bootstrap. Release announcement posts on [the official Bootstrap blog](https://blog.getbootstrap.com/) contain summaries of the most noteworthy changes made in each release.
 
 
 ## Creators

_config.yml

 # Dependencies
-markdown:         kramdown
-highlighter:      rouge
+markdown:       kramdown
+highlighter:    rouge
 
 kramdown:
-  auto_ids: true
+  auto_ids:     true
 
 # Permalinks
-permalink:        pretty
+permalink:      pretty
 
 # Server
-source:           .
-destination:      ./_gh_pages
-port:             9001
-baseurl:          ""
-url:              https://getbootstrap.com
-encoding:         UTF-8
-exclude:          [.git, .github, assets/scss/, build, js, node_modules, nuget, scss, vendor, bower.json, composer.json, Gemfile, Gemfile.lock, Gruntfile.js, package.js, package.json, package-lock.json, sache.json]
-
-gems:
+source:         "."
+destination:    ./_gh_pages
+port:           9001
+baseurl:        ""
+url:            "https://getbootstrap.com"
+encoding:       UTF-8
+exclude:
+  - .git/
+  - .github/
+  - assets/scss/
+  - build/
+  - js/
+  - node_modules/
+  - nuget/
+  - scss/
+  - vendor/
+  - bower.json
+  - composer.json
+  - Gemfile
+  - Gemfile.lock
+  - package.js
+  - package.json
+  - package-lock.json
+  - sache.json
+  - twbsconfig.yml
+
+plugins:
   - jekyll-redirect-from
   - jekyll-sitemap
   - jekyll-toc
 
 # Social
-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_logo_path: /assets/brand/bootstrap-social-logo.png
-social_image_path: /assets/brand/bootstrap-social.png
-
-# Custom vars
-current_version:  4.0.0-alpha.6
-docs_version:     4.0
-repo:             https://github.com/twbs/bootstrap
-slack:            https://bootstrap-slack.herokuapp.com
+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:  /assets/brand/bootstrap-social.png
+social_logo_path:   /assets/brand/bootstrap-social-logo.png
 
-download:
-  source:         https://github.com/twbs/bootstrap/archive/v4.0.0-alpha.6.zip
-  dist:           https://github.com/twbs/bootstrap/releases/download/v4.0.0-alpha.6/bootstrap-4.0.0-alpha.6-dist.zip
+# Custom variables
+current_version:    4.0.0-beta
+docs_version:       4.0
+repo:               "https://github.com/twbs/bootstrap"
+slack:              "https://bootstrap-slack.herokuapp.com"
+blog:               "https://blog.getbootstrap.com"
+expo:               "https://expo.getbootstrap.com"
+jobs:               "https://jobs.getbootstrap.com"
+themes:             "https://themes.getbootstrap.com"
 
-blog:             https://blog.getbootstrap.com
-expo:             https://expo.getbootstrap.com
-themes:           https://themes.getbootstrap.com
-jobs:             https://jobs.getbootstrap.com
+download:
+  source:           "https://github.com/twbs/bootstrap/archive/v4.0.0-beta.zip"
+  dist:             "https://github.com/twbs/bootstrap/releases/download/v4.0.0-beta/bootstrap-4.0.0-beta-dist.zip"
 
 cdn:
   # See https://www.srihash.org for info on how to generate the hashes
-  css:            https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css
-  css_hash:       "sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ"
-  js:             https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js
-  js_hash:        "sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn"
-  jquery:         https://code.jquery.com/jquery-3.2.1.slim.min.js
-  jquery_hash:    "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
-  popper:         https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js
-  popper_hash:    "sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4"
+  css:              "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css"
+  css_hash:         "sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M"
+  js:               "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js"
+  js_hash:          "sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1"
+  jquery:           "https://code.jquery.com/jquery-3.2.1.slim.min.js"
+  jquery_hash:      "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
+  popper:           "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js"
+  popper_hash:      "sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh"

_data/browser-bugs.yml

@@ -204,7 +204,7 @@
   summary: >
     `table-cell` borders not overlapping despite `margin-right: -1px`
   upstream_bug: >
-    Chromium#568691
+    Chromium#749848
   origin: >
     Bootstrap#17438, Bootstrap#14237
 

_data/browser-features.yml

@@ -52,7 +52,7 @@
   browser: >
     Edge
   summary: >
-    Implement the [`of <selector-list>` clause](http://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
+    Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
   upstream_bug: >
     UserVoice#15944476
   origin: >
@@ -62,7 +62,7 @@
   browser: >
     Firefox
   summary: >
-    Implement the [`of <selector-list>` clause](http://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
+    Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
   upstream_bug: >
     Mozilla#854148
   origin: >
@@ -102,7 +102,7 @@
   browser: >
     Chrome
   summary: >
-    Implement the [`of <selector-list>` clause](http://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
+    Implement the [`of <selector-list>` clause](https://caniuse.com/#feat=css-nth-child-of) of the `:nth-child()` pseudo-class
   upstream_bug: >
     Chromium#304163
   origin: >

_data/core-team.yml

@@ -37,3 +37,8 @@
 - name: Johann-S
   user: johann-s
   gravatar: d90d49733a4fe1aa461e45cb4a4fd9e3
+
+
+- name: Andres Galante
+  user: andresgalante
+  gravatar: 03dc4f2e26e476958c952505c8d8f563

_data/nav.yml

@@ -5,7 +5,7 @@
     - title: Contents
     - title: Browsers & devices
     - title: JavaScript
-    - title: Options
+    - title: Theming
     - title: Build tools
     # - title: Best practices # TODO: Write this content
     - title: Webpack
@@ -75,12 +75,12 @@
     # - title: Approach
     - title: Icons
 
-# - title: About
-#   pages:
-#     - title: History
-#     - title: Team
-#     - title: Brand
-#     - title: License
-#     - title: Translations
-
 - title: Migration
+
+- title: About
+  pages:
+    - title: History
+    - title: Team
+    - title: Brand
+    - title: License
+    - title: Translations

_data/showcase.yml

@@ -9,7 +9,7 @@
   img: vogue
 
 - name: Riot Design
-  url: http://riotdesign.eu/en/
+  url: https://riot.design/en/
   expo_url: https://expo.getbootstrap.com/2014/03/13/riot-design/
   img: riot
 

_data/translations.yml

+- name: 中文(繁體)
+  code: zh-tw
+  description: Bootstrap 4 繁體中文手冊
+  url: http://bootstrap.hexschool.com/
+
 - name: Chinese
   code: zh
   description: Bootstrap 4 中文文档教程