assetgraph/assetgraph-sprite — pull request #13 by Munter (2014-12-25 23:47:04+00:00)
Title: Handle background-size on sprite images

Closes #12

This is a work in progress. I still don't know how to programmatically test that the rendering is correct.

@silvenon could you link this branch up in your local setup so assetgraph-builder runs with it and see if your retina sprites get handled better?