Merge pull request #47 from Aaronontheweb/master

added SupervisorStrategy as an optional Props setting
Merge pull request #48 from Aaronontheweb/master

fixed a bug with ExpressionExtensions
Merge pull request #49 from Aaronontheweb/master

added an overload to RoundRobinGroup
Started refactoring for replacing actorrefs on reincarnation
Added Uid to ActorPath
Refactored MakeChild
Refactored Ask support
More Ask refactoring
Refactored AskSupport, removed the need to pass ActorSystem
Made RemoteActorRef askable
More ActorPath tests
ActorPath bugfix
More ActorPath tests
Completed ActorPathSpec
Added ManageLogLevelTests
EventStreamSpec fix
Refactoring ActorRef usage
More actorref refactoring
More Actorref refactoring
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