Added support for initialization parameters to `normalize()`
It simply passes them to `initial()` before rendering
Added `degrees()` function
Closes #40
Oops
Added `transparent` case to `opaque()`
Refactoring `vendorize()`
Fixed `vendorize()`
Updated Stylus to 0.43.0
Removed `define.js`, since Stylus has `define()` built-in now
Really remove the `use('define.js')` line
Merged all the `flex-*` mixins into `flex.styl`
Removed unnecessary parameter in test runner
Updated Stylus to 0.48.1
Merge branch 'master' into issue/14/animation
Updated caniuse tests so now it checks for unneeded prefixes
Fixed `background-size` and `border-image`
Updated the `normalize()` test with more initial values
Merge branch 'master' into issue/14/animation