Fixes an issue with passed idents, literals and shit
Removed uneeded `unquote()`
Refactored the `reset` mixin so now it looks at `initial.json` values
Added `background-clip` and `background-origin` to `initial.json`
Fixes an issue with passed idents, literals and shit
Removed uneeded `unquote()`
Merge branch 'master' into issue-4-reset
Added tests for `reset: background-clip/origin`