-- URN vs HRN
-* methods should support urn or hrn arguments
-* create a module that converts urn to hrn so we can continue using
- hrn behind the scenes
-* add get_urn() method to GID object
-* urn is the standard over the wire format
-
-- Registry
-* refactor to use managers
-* update call should attempt to push updates to federated peers if
- the peer has a record for an object that is updated locally
-* api.update_membership() shoudl behave more like resolve when looking up records (attempt to resolve records at federated registeries) instead of only looking in the local registry