Move :root handling into interpretor.

Test counters() handling against longhand rather than shorthand.

Because that's where it'll be passed

Start testing counters implementations, fix syntactic shorthand lowering for counter[s]() functions.

Release new Haskell Stylist & XML Conduit Stylist!

XML Conduit Stylist changed to abstract away Haskell Stylist's breaking datastructure changes.

Correct pseudoclass to pseudoelement rewrites to apply to only rightmost selector.

I previously got the semantics of my datastructures backwards: the head is the rightmost selector.

Lower psuedoclasses & namespaces throughout CSS selectors.

Previously I just applied to them to the rightmost.

Rewrite parsed namespaces according to @namespace rules.

Correct legacy :before/:after syntax.

Support lowering single-arg psuedoclasses.

Implement psuedoclass rewrite rules.

Substitute in counters for any CSS textual property, not just `content`.

Will be required by Rhapsode for navigational markers.

Implement whitespace collapse, togglable via white-space: pre/normal;

Parse & prepare to handle white-space: pre;

Implement CSS3 counters.

Parse CSS counters.

Fix compilation of Assets StyleSheets.

Provide utilities for rewriting CSS-referenced URLs.

Improve documentation, release version 1.2

Write reference documentation.

Request @import'd styles concurrently.