Move helper methods to RootBase.
Add entity trait.
Draft of process manager api.
Add name to *Type.
Extract EventData from Aggregate.
ProcessManager now uses EventData.
Add draft of ReadModel.
Remove unused command handler.
Change ReadModelConnector to ReadModelRegistration.
Add BoundedContextBackend as the integration point between
infrastructure and model.
Use shardCount instead of maxNodes.
Add EventData unapply.
Draft of a pubsub system interface.
Add unsubscribe.
Add a seed to the process manager type.
WIP: ProcessManager implementation based on actors.