Determine how best to keep up with Mesos releases

Aurora 0.9.0 was released with a dependency on Mesos 0.22. The current release is Mesos 0.24. There was a change with how data was published into the Mesos ZK node in Mesos 0.23 (Protobuf to JSON) meaning that frameworks that are linked against 0.22 will get a libmesos error when using the 0.24 library.

The task is to determine what is the best way forward in scenarios like this. Possible options include:

• Release 0.9.x with a newer mesos dependency
• Cut a new release from master that depends on 0.24

Problems include backwards/forwards compatibility. For example if we release 0.9.1 with a dependency on Mesos 0.24 will Aurora still work against a Mesos Master that runs 0.22?