First cut of new meshms API, unfinished
Reduce meshms entry encoding size
Add API to generate public key from private key
Add API for bufferred reading of rhizome bundles
Add API to create bundles with deterministic ID's
ACK conversations when listed, track conversations in a bundle
Add command to mark messages as read
Improve test reliability
Fix non-journal, non-block based payload encryption
Use sid_t consistently, tweak command output
Output message read offsets in conversation list
Add version to conversation payload, shrink size
Change manifest service to MeshMS2
Add separate rows for delivered and read status

- add explicit transaction around blob writes so the commit can be retried
- remove status columns
- remove SID's from message log output to reduce size and complexity
Add stress test that sends lots of messages while transferring
Merge branch 'meshmsv2' into development