- url(r'^books/(?P<slug>[^/]+)\.(?P<emitter_format>xml|json|yaml)$', book_resource),
- url(r'^books\.(?P<emitter_format>xml|json|yaml)$', book_resource),
-)
+ url(r'^book_changes/(?P<since>\d*?)\.(?P<emitter_format>xml|json|yaml)$', book_changes_resource),
+ url(r'^tag_changes/(?P<since>\d*?)\.(?P<emitter_format>xml|json|yaml)$', tag_changes_resource),
+ url(r'^changes/(?P<since>\d*?)\.(?P<emitter_format>xml|json|yaml)$', changes_resource),