After putting many hours of work into the tests and finding odd little problems with how I was handling some of the CSS3 values, I am happy to announce that version 0.3.0 has just been released. Get it now from the Download page, or view a live demo to understand more about how it works.
This release includes tests for all of the values for the properties I've defined (not quite all of them, but it will be difficult to find something that wasn't covered). There's also other tests and a couple functional tests that do pretty printing and validation of actual CSS files.
My next task is to get some better documentation written and put on this website. Stay tuned!