When selecting an entry's latest size, make sure to select shards that match the entry's current version.  Also, for now add debug messages when NACK'ing updates.
When selecting an entry's latest size, make sure to select shards that
match the entry's current version.  Also, for now add debug messages
when NACK'ing updates.

jcnelson/syndicate,jcnelson/syndicate,iychoi/syndicate,iychoi/syndicate,jcnelson/syndicate,iychoi/syndicate,jcnelson/syndicate,iychoi/syndicate,iychoi/syndicate,iychoi/syndicate,jcnelson/syndicate,jcnelson/syndicate,iychoi/syndicate,jcnelson/syndicate,jcnelson/syndicate,iychoi/syndicate