Drop TypeMap to 2 bytes for better Timelines

Since timeline records only 16bytes per packet, drop TypeMap to just
the 2 bytes, limiting us to 65535 unique serializable classes per cloud
Fix timeline bug not skipping port#
Recreate Timeline pretty-printers for Paxos
For now, ignore out-of-cloud timelines

(although these are the most interesting because their the other half
of a failed cloud formation)