0.9.2.RELEASE
- Client, server WebSocketProtocolHandler: add netty's handshake events
- WebSocketClientProtocolHandler: make default allowMaskMismatch = true
- WebSocketClientProtocolHandler: fail handshake completion promise on timeout
- WebSocketServerProtocolHandler: add support for handshake timeout
- WebSocketServerProtocolHandler: on handshake errors send bad-request http response before closing connection