Updated the documentation parser to work with categories. Additionally, I updated the copyright notice in the jQuery header and removed some extraneous whitespace from jQuery Lite.

Added in a mess of AJAX fixes and optimisations, made possible by Taku Sano. On top of his patch I touched up some of the code, made some bug fixes, and added some additional functionality (including the ability to load and eval a remote script file.

Massive overhauls to the test suite - it is now generated dynamically, along with the documentation.