Ass-ets

- Renamed project to ``webassets``, no longer Django specific;
instead, the Django app is an optional addon.
- With the change to ``webassets``, a bunch of new things are
included which now make sense, like loading from YAML files.
- Got rid of the ASSETS_AUTO_CREATE option.

- Fixed: YUI filter JAVA_HOME handling (Ian Langworth,
Asheesh Laroia).
- 1.2 compatibility.
- Don't apply cache busting to source files in debug mode.
- Fixed ASSETS_AUTO_CREATE behavior.

- Compatibility with Django >= 1.0.
- Added some actual documentation.
- Allow assets to be defined in code, through ``Bundles``.
- Improved, more powerful way to define filters.
- Support for Jinja2 templates; support for Coffin, if installed.
- New CleverCSS filter (thanks to Florian Schachter).
- New less filter.
- Various bug fixes.

This release introduces some backwards-incompatible changes. See
the ``Upgrading`` page in the documentation for details.

Initial release.