fixed Implementation-Version in Manifest to include the revision from git. Als re-enabled the SpringBasedActorSystem to use this version by default and fall back to UNKNOWN version when it cannot be read from the Manifest
implemented cache with global size but with a segment per ActorContainer. Still need to add logic for handling of evicted PersistentActor instances
reverted clusterExecutor threads back to one because it breaks loading order for ActorSystems
Merge remote-tracking branch 'origin/master'
added eviction listening code to LocalActorShard that runs a PassivateActorTask that calls prePassivate lifecycle method