0.5.0 - major overhaul

• New website with update documentation #104
• A Dispatcher Factory for simplified API for creating dispatchers. #178
• Use Future as backend interface rather than actorRef #171
• More automated stress tests against multiple scenarios #74
• Reject all queued work if there is no worker pool created after grace period #191
• Queue should fail any remaining work on Shutdown #142
• Stale Work possibility #143
• reimplement circuit breaker per handler #190
• retry and timeout #188
• Fail fast mode #185
• Result checker optionally indicate a retry or fail. #79
• making all config hyphen cased/ upgraded Akka #186
• added host name to metrics name fixes #181 #182
• moving metrics collector in house, making statsDclient an independent… #179