catch exception during compression decode/encode.
Upgraded to akka-actor 2.3.0-RC1.
cleanup
cleanup.
Simplified handshaking code.
Use Option.fold instead of Option.toList
add upgrade client
Merge pull request #3 from cowboy129/master

add upgrade client
Cleanup
Support per-message deflate in client code
Merge pull request #4 from cowboy129/master

Support per-message deflate in client code
cleanup.
Enable PongFrame in WebSocketFrontend

Client/Server share the frontend code, so we may receive pong frame in
event pipeline.
Merge pull request #5 from cowboy129/master

Enable PongFrame in WebSocketFrontend
Add UT for FrameStream, fix rendering bugs
Support http response with frame, add client to server masking
Merge pull request #6 from cowboy129/master

Add UT for FrameStream, fix rendering bugs
cleanup.
Changed to UHttp.Upgraded(state)
receiveRef should not be created in unique name.