Changed to Akka version 2.3.2.
Changed folder names from ama_core to ama-core (from ama_sample to ama-sample and so on).
Bugfix: actors were initialized in parallel and if LifecycleListener didn't manage to be first then if error occured system didn't shut down.
Classifiers now takes case a: ... => Some(a).
LifecycleListener renamed to LifecycleManager.

ShutdownSystem message moved out from LifecycleManager object.