Ignoring .directory file
Upgrading to akka version 2.2.3
Moving customized BusLogging to logging package.
Merge branch 'master' of https://github.com/ktonga/akka-contextual-actors
Upgrading Akka dependency up to 2.3-SNAPSHOT
Using new Akka MDC support available since 2.3 and implementing ContextualActor using aroundReceive