Missing.css 1.1.3

Changelog

• The following changes are all the work of @geoffrey-eisenbarth@github.com:

  • Added feed.js, an implementation of ARIA Feed.
  • Fixed: Renaming of --primary-font to --main-font was incomplete.
  • Fixed: --display-font was documented as being renamed to --secondary-font, but both variables were actually in use. Now, both are documented and used for their respective purposes.
  • The masquerade class .<a> did not work as expected on <button> elements.

  Thanks Geoffrey!

• Added a -dark-theme class to force-enable the dark theme. Thanks @DavesBorges@github.com!

• Fixed some packaging and distribution issues.