+- 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
+* sfi remove, if removing a site, remove any record that site is an an authority for
+* support generic registry records (dont depend on postgres! object db?)
+* modify resolve() so that you can resolve more than 1 hrn at at time (list of hrns)