Mkdocs-material

* Added new FontAwesome icons
* Fixed 1609: Instant loading doesn't honor target=_blank
* Fixed GitHub stars count rounding errors
* Fixed GitLab stars count retrieval

* Added support for icons from Markdown through mkdocs-material-extensions

* Added CSS source maps to distribution files
* Fixed errors in Chinese (Traditional) translations
* Fixed creation of stale directory on installation from git
* Improved overflow scrolling behavior on iOS (reduced bundle size by 4kb)

* Fixed syntax error in Spanish translations

* Reactive architecture – try app.dialog$.next("Hi!") in the console
* Instant loading – make Material behave like a Single Page Application
* Improved CSS customization with CSS variables – set your brand's colors
* Improved CSS resilience, e.g. proper sidebar locking for customized headers
* Improved icon integration and configuration – now including over 5k icons
* Added possibility to use any icon for logo, repository and social links
* Search UI does not freeze anymore (moved to web worker)
* Search index built only once when using instant loading
* Improved extensible keyboard handling
* Support for prebuilt search indexes
* Support for displaying stars and forks for GitLab repositories
* Support for scroll snapping of sidebars and search results
* Reduced HTML and CSS footprint due to deprecation of IE support
* Slight facelifting of some UI elements (admonitions, tables, ...)

* Removed optional third-party plugins from requirements.txt
* Updated Docker image to contain all supported third-party plugins