Add browser support vars
Add test case for old ie's support for clearfix
Add old IE's support in clearfix.
Documentation for old-ie support for clearfix.
Conventions in luminosity function
Import caniuse data
Remove dollars from global browser support vars
Add prefiks dependency
Remove caniuse-db & update chalk dependency.
Update dependencies
Update prefiks dependency
Add caniuse-prefixes function
Update prefiks dependency
Test & implementation of transform feature
Test & implementation of flexbox feature
Test & implementation of animation feature
Remove implementation of appearance
Restore appearance implementation
Test & implementation of background-img-opts feature
Test & implementation of multicolumn feature