118- Update now only saves fields which 'exist' in the object, meaning
     you don't have to force $object->load() before updating.
   - New hasa() and hasmany() for easier relationship definitions.
   - Models can now render ->as_xml() and as_json()
   - Tweaked route processing (action & aspect) to be safer and more consistent

99 - reworked url/file-extension & HTTP Accept header handling
     deprecated controller::process_uri in favour of process_request

87 - JSON response support

71 - Buffered output handling, better test coverage

12 - Added application builder in scripts/clearpress