The constructor of TornadoWebSocketClient calls the constructor of WebSocketBaseClient with version=..., but WebSocketBaseClient.__init__ only supports extensions as an extra arg, and not version.
https://github.com/Lawouach/WebSocket-for-Python/blob/master/ws4py/client/tornadoclient.py#L14
https://github.com/Lawouach/WebSocket-for-Python/blob/master/ws4py/client/\_\_init\_\_.py#L18