Merge pull request #2 from akkadotnet/dev

Dev
Merge pull request #191 from Aaronontheweb/master

akka v0.6.1 - IN PRODUCTION
Merge branch 'dev' of https://github.com/akkadotnet/akka.net into dev
fixed the SingleThreadDispatcher
Merge remote-tracking branch 'upstream/dev' into dev
Merge remote-tracking branch 'upstream/master' into dev
Made singleton message ctor's public for serialization
Added test to ensure singletons with private ctor can be serialized/deserialized
Fix #209. A closed mailbox shouldn't process usermsgs

A terminated actor should also drain all messages to DeadLetterMailbox
modified DeadLetterListener to log actor path for both Sender and Recepient
Merge remote-tracking branch 'akka-orig/dev' into dev
Merge pull request #213 from HCanber/fsharp-mapreduce

F# MapReduce uses InternalActorRef. It should be using ActorRef. Breaking change
Merge pull request #215 from HCanber/check-mailbox-closed_and-drain-bug-209

A closed mailbox shouldn't process usermsgs. Fixes #209
Merge pull request #207 from Aaronontheweb/dev

fixed bug with single-thread dispatcher
Merge pull request #217 from Horusiath/dev

DeadLetterListener - include actor paths in published messages
Removed MD/rST documentation from code repository
Merge pull request #218 from rogeralsing/dev

Removed documentation from code repository
Replace usage of AtomicInteger with Akka.Utils.AtomicCounter
Move Comparable to Akka.Tests in order to remove dep on fastJSON
Remove HoconTests from Testkit

We have the tests already in Akka.Tests but it's missing CanUseFallback and CanUseFallbackInSubConfig