* Separate material styles into a separate file
* Improve action button styles
* Rename --font-size-default to --font-size
* Remove px units
* Remove some material vars
* Fix some variable names
* Define variables
* Remove --shadow-vertical
* Revert name change
* Move var
* Rename var
* Update vars
* Remove redundant vars
* Update search styles
* Update styles
* Update colors
* Update variable names
* Include material.css on float.html page
* Improve styles for #content-scroll-focus
* Create new class to manage and control document focus
* Use new focus class
* Add a check to prevent redundant .blur calls
* Add script to build library files
* Add built parse5 library
* Add new SimpleDOMParser which uses parse5
* Update license info
* Update MV3 build to use the new SimpleDOMParser
* Update file exclusions
* Hide/clarify license info for MV2 builds
