- Push messaging - stack folder versioning
https://github.com/openpeer/opios-production/issues/59

- Push messaging - message versioning
https://github.com/openpeer/opios-production/issues/60

- Push messaging - SQL lite push mailbox DB abstration
https://github.com/openpeer/opios-production/issues/71

- Push messaging - stack monitor folder logic
https://github.com/openpeer/opios-production/issues/93