After implementing the backend for asynchronous SSM operations (BZ 483606), we need to migrate the driving use case over to use it. This BZ is to track moving the channel subscription updates to use the asynchronous system.
Commit: 1c2c0a83d18b90e95d1ab0d7b14c34bd9c83593f Migrated to use message queue and asynchronous operation logging.
Spacewalk 0.5 released.
Spacewalk 0.5 has been released for long time ago.