querysets can use fields
docstring for _qs
added 2 methods into HandlerDocumentation: get_doc returns the __doc__ of the current handler,  and get_resource_uri_template converts resource_uri to a URI template (http://bitworking.org/projects/URI-Templates/)
Automated merge with http://bitbucket.org/johnnoonr/django-piston-qs/
cleaning up some code from johnnoonr, accepting his qs fork
adding Xavier Barbosa to authors
adding 2 tests with abstract base models
Catch the FormValidationError exception and then access its form attribute.
Add a basic EchoHandler and tests to show that the validation decorator is now working.
adding Michael Richardson to authors
can exclude absolute_uri now
not including absolute_uri unless asked for
Added .svn to .hgignore
Now using OAuth DataStore from settings.OAUTH_DATA_STORE
Changed message to msg in HttpStatusCode to avoid 2.6 DeprecationWarnings.
Now caching the configured DataStore class object
utils.Mixer.is_multipart now only checks the request header.

This should fix some issues with testing multipart requests.
Made a minimal change to utils.coerce_put_post to support file-uploads

Previously request.FILES got not populated.
coerce_put_post is now mod_python compatible, fixes #39
Added tag 0.2.1 for changeset a14b7b6ffa03