update bootstrap to version 4.3.1

1 files changed, 71 insertions, 34 deletions

diff --git a/vendor/twbs/bootstrap/README.md b/vendor/twbs/bootstrap/README.md
index cd01c6609..9fa8f536a 100644
--- a/vendor/twbs/bootstrap/README.md
+++ b/vendor/twbs/bootstrap/README.md
@@ -1,29 +1,26 @@
 <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/4.3/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://jobs.getbootstrap.com/">Jobs</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/4.3/"><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>
 
-<br>
 
 ## Table of contents
 
@@ -36,20 +33,23 @@
 - [Community](#community)
 - [Versioning](#versioning)
 - [Creators](#creators)
+- [Thanks](#thanks)
 - [Copyright and license](#copyright-and-license)
 
+
 ## Quick start
 
 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/v4.3.1.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@4.3.1`
+- Install with [Composer](https://getcomposer.org/): `composer require twbs/bootstrap:4.3.1`
 - 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/4.3/getting-started/introduction/) for information on the framework contents, templates and examples, and more.
+
 
 ## Status
 
@@ -63,16 +63,18 @@ Read the [Getting started page](https://getbootstrap.com/docs/4.1/getting-starte
 [![peerDependencies Status](https://img.shields.io/david/peer/twbs/bootstrap.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)
 [![Coverage Status](https://img.shields.io/coveralls/github/twbs/bootstrap/v4-dev.svg)](https://coveralls.io/github/twbs/bootstrap?branch=v4-dev)
-[![CSS gzip size](http://img.badgesize.io/twbs/bootstrap/v4-dev/dist/css/bootstrap.min.css?compression=gzip&label=CSS+gzip+size)](https://github.com/twbs/bootstrap/tree/v4-dev/dist/css/bootstrap.min.css)
-[![JS gzip size](http://img.badgesize.io/twbs/bootstrap/v4-dev/dist/js/bootstrap.min.js?compression=gzip&label=JS+gzip+size)](https://github.com/twbs/bootstrap/tree/v4-dev/dist/js/bootstrap.min.js)
+[![CSS gzip size](https://img.badgesize.io/twbs/bootstrap/v4-dev/dist/css/bootstrap.min.css?compression=gzip&label=CSS+gzip+size)](https://github.com/twbs/bootstrap/tree/v4-dev/dist/css/bootstrap.min.css)
+[![JS gzip size](https://img.badgesize.io/twbs/bootstrap/v4-dev/dist/js/bootstrap.min.js?compression=gzip&label=JS+gzip+size)](https://github.com/twbs/bootstrap/tree/v4-dev/dist/js/bootstrap.min.js)
+[![BrowserStack Status](https://www.browserstack.com/automate/badge.svg?badge_key=SkxZcStBeExEdVJqQ2hWYnlWckpkNmNEY213SFp6WHFETWk2bGFuY3pCbz0tLXhqbHJsVlZhQnRBdEpod3NLSDMzaHc9PQ==--3d0b75245708616eb93113221beece33e680b229)](https://www.browserstack.com/automate/public-build/SkxZcStBeExEdVJqQ2hWYnlWckpkNmNEY213SFp6WHFETWk2bGFuY3pCbz0tLXhqbHJsVlZhQnRBdEpod3NLSDMzaHc9PQ==--3d0b75245708616eb93113221beece33e680b229)
+[![Backers on Open Collective](https://opencollective.com/bootstrap/backers/badge.svg)](#backers)
+[![Sponsors on Open Collective](https://opencollective.com/bootstrap/sponsors/badge.svg)](#sponsors)
 
-[![Sauce Labs Test Status](https://saucelabs.com/browser-matrix/bootstrap.svg)](https://saucelabs.com/u/bootstrap)
 
 ## What's included
 
 Within the download you'll find the following directories and files, logically grouping common assets and providing both compiled and minified variations. You'll see something like this:
 
-```
+```text
 bootstrap/
 └── dist/
     ├── css/
@@ -99,7 +101,7 @@ bootstrap/
         └── bootstrap.min.js.map
 ```
 
-We provide compiled CSS and JS (`bootstrap.*`), as well as compiled and minified CSS and JS (`bootstrap.min.*`). [source maps](https://developers.google.com/web/tools/chrome-devtools/debug/readability/source-maps) (`bootstrap.*.map`) are available for use with certain browsers' developer tools. Bundled JS files (`bootstrap.bundle.js` and minified `bootstrap.bundle.min.js`) include [Popper](https://popper.js.org/), but not [jQuery](https://jquery.com/).
+We provide compiled CSS and JS (`bootstrap.*`), as well as compiled and minified CSS and JS (`bootstrap.min.*`). [source maps](https://developers.google.com/web/tools/chrome-devtools/javascript/source-maps) (`bootstrap.*.map`) are available for use with certain browsers' developer tools. Bundled JS files (`bootstrap.bundle.js` and minified `bootstrap.bundle.min.js`) include [Popper](https://popper.js.org/), but not [jQuery](https://jquery.com/).
 
 
 ## Bugs and feature requests
@@ -111,22 +113,25 @@ 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/4.3/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/4.3/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.
 
-Learn more about using Jekyll by reading its [documentation](https://jekyllrb.com/docs/home/).
+Learn more about using Jekyll by reading its [documentation](https://jekyllrb.com/docs/).
 
 ### Documentation for previous releases
 
 - 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/>
+- For v4.2.x: <https://getbootstrap.com/docs/4.2/>
 
 [Previous releases](https://github.com/twbs/bootstrap/releases) and their documentation are also available for download.
 
@@ -154,7 +159,7 @@ Get updates on Bootstrap's development and chat with the project maintainers and
 
 ## Versioning
 
-For transparency into our release cycle and in striving to maintain backward compatibility, Bootstrap is maintained under [the Semantic Versioning guidelines](https://semver.org/). Sometimes we screw up, but we'll adhere to those rules whenever possible.
+For transparency into our release cycle and in striving to maintain backward compatibility, Bootstrap is maintained under [the Semantic Versioning guidelines](https://semver.org/). Sometimes we screw up, but we 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.
 
@@ -172,6 +177,38 @@ See [the Releases section of our GitHub project](https://github.com/twbs/bootstr
 - <https://github.com/fat>
 
 
+## Thanks
+
+<a href="https://www.browserstack.com/">
+  <img src="https://live.browserstack.com/images/opensource/browserstack-logo.svg" alt="BrowserStack Logo" width="192" height="42">
+</a>
+
+Thanks to [BrowserStack](https://www.browserstack.com/) for providing the infrastructure that allows us to test in real browsers!
+
+
+## Backers
+
+Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/bootstrap#backer)]
+
+[![Bakers](https://opencollective.com/bootstrap/backers.svg?width=890)](https://opencollective.com/bootstrap#backers)
+
+
+## Sponsors
+
+Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/bootstrap#sponsor)]
+
+[![](https://opencollective.com/bootstrap/sponsor/0/avatar.svg)](https://opencollective.com/bootstrap/sponsor/0/website)
+[![](https://opencollective.com/bootstrap/sponsor/1/avatar.svg)](https://opencollective.com/bootstrap/sponsor/1/website)
+[![](https://opencollective.com/bootstrap/sponsor/2/avatar.svg)](https://opencollective.com/bootstrap/sponsor/2/website)
+[![](https://opencollective.com/bootstrap/sponsor/3/avatar.svg)](https://opencollective.com/bootstrap/sponsor/3/website)
+[![](https://opencollective.com/bootstrap/sponsor/4/avatar.svg)](https://opencollective.com/bootstrap/sponsor/4/website)
+[![](https://opencollective.com/bootstrap/sponsor/5/avatar.svg)](https://opencollective.com/bootstrap/sponsor/5/website)
+[![](https://opencollective.com/bootstrap/sponsor/6/avatar.svg)](https://opencollective.com/bootstrap/sponsor/6/website)
+[![](https://opencollective.com/bootstrap/sponsor/7/avatar.svg)](https://opencollective.com/bootstrap/sponsor/7/website)
+[![](https://opencollective.com/bootstrap/sponsor/8/avatar.svg)](https://opencollective.com/bootstrap/sponsor/8/website)
+[![](https://opencollective.com/bootstrap/sponsor/9/avatar.svg)](https://opencollective.com/bootstrap/sponsor/9/website)
+
+
 ## Copyright and license
 
-Code and documentation copyright 2011-2018 the [Bootstrap Authors](https://github.com/twbs/bootstrap/graphs/contributors) and [Twitter, Inc.](https://twitter.com) Code released under the [MIT License](https://github.com/twbs/bootstrap/blob/master/LICENSE). Docs released under [Creative Commons](https://github.com/twbs/bootstrap/blob/master/docs/LICENSE).
+Code and documentation copyright 2011-2019 the [Bootstrap Authors](https://github.com/twbs/bootstrap/graphs/contributors) and [Twitter, Inc.](https://twitter.com) Code released under the [MIT License](https://github.com/twbs/bootstrap/blob/master/LICENSE). Docs released under [Creative Commons](https://github.com/twbs/bootstrap/blob/master/docs/LICENSE).