# changes handlers
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),
# changes handlers
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),