-- Protogeni
-* agree on standard set of functon calls
-* agree on standard set of privs
-* on permission error, return priv needed to make call
-* cache slice resource states (if aggregate goes down, how do we know what
- slices were on it and recreate them? do we make some sort of transaction log)
-
-- Registry
-* sign peer gids
-* 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