Utility method to assert valid keys.
Add basic asset collection configuration via ruby and use it for image urls.
Use asset collections and asset resolver for fonts.
Use the asset resolver for generated images.
Refactor stylesheet_url with better tools and remove useless code.
Allow sass-based configuration of asset collections.
Put sass files from an asset collection on the load path.
CHANGELOG entry for asset collections.
Document asset collections.
Start 1.1 development.
update sass_path before updating project