Breaking changes in 1.4 #753

This issue is used to track all the breaking changes coming with 1.4.0.

Since this is the first major release, I would like to use this opportunity to clean up some old things.

Breaking changes

• Enum ReadyState was moved (and renamed) to to org.java_websocket.enums.ReadyState
• Enum Opcode was moved to org.java_websocket.enums.Opcode
• Enum Role was moved to org.java_websocket.enums.Role
• Enum HandshakeState was moved to org.java_websocket.enums.HandshakeState
• Enum CloseHandshakeType was moved to org.java_websocket.enums.CloseHandshakeType
• Renamed LimitExedeedException to LimitExceededException

Removal due to deprecation

• ReadyState.CONNECTING
• AbstractClientProxyChannel
• WebSocketListener.onWebsocketMessageFragment( WebSocket conn, Framedata frame )
• WebSocketAdapter.onWebsocketMessageFragment( WebSocket conn, Framedata frame )
• WebSocketClient.onWebsocketMessageFragment( WebSocket conn, Framedata frame )
• WebSocketServer.onWebsocketMesageFragment( WebSocket conn, Framedata frame )
• WebSocketImpl.isConnecting()
• WebSocket.isConnectiong()
• WebSocketClient.isConnecting()
• WebSocketClient.onFragment( Framedata frame )
• WebSocketServer.onFragment( WebSocket conn, Framedata fragment )
• WebSocketServer.connections()