0.0.3.RELEASE

• split server handler into 2 parts: handshake only handler, server channel handler. This makes handshake only handler simpler as It does not contain unrelated state
• handshake only handler: add RejectedWebSocketListener for websockets rejected due to protocol violation
• http2WebSocketEvent: rename Http2WebSocketInboundEvent to Http2WebSocketLifecycleEvent
• http2 websocket channel handler: optional optimization for at most 1 websocket per connection, more memory efficient server http1 websocket handler containers
• websocket channel: do not allocate redundant promise on every DATA frame write
• websocket channel: add remote reset, remote go away events
• add subprotocol to handshake events
• client/server handshaker: missing handler error message contains path/subprotocol
• http2WebSocketServerBuilder: throw if compression is enabled, but extensions are disabled. This change aligns server builder with Http2WebSocketClientBuilder