mapbox/mapbox-gl-style-spec — pull request #180 by peterqliu (2014-10-08 18:12:19+00:00)
Title: Add units

per #173

- [X] broke out units in a dedicated `units` key
- [X] tightened up some copy

I've also changed all `text` attributes to ems instead of pixels (except `text-padding`). If this could be verified, that'd be great.

cc @tmcw @edenh