v20161227

• Change installation method.
• Restructure and organize source files to keep theme maintainable.
• Bundle versions 3.18 to 3.22 into the master branch.
• Drop support for 3.14 and 3.16.
• Boycott Budgie -> "Ubuntu Budgie".
  • Update: I had some misunderstanding about "Budgie". I apologize for Solus/Budgie team.
• Simplify SVGs code to keep it maintainable.
• Other tweaks and fixes.