Call connection_open after websocket handshake
Call connection_open after websocket handshake

It seems that due to (recent?) changes in the websocket library, we
now need to call "connection_open" to flag that the websocket is now
ready to use. I've added that call just after the call to
"connection_made".

lixxu/sanic,ashleysommer/sanic,yunstanford/sanic,ashleysommer/sanic,channelcat/sanic,channelcat/sanic,yunstanford/sanic,channelcat/sanic,lixxu/sanic,channelcat/sanic,yunstanford/sanic,lixxu/sanic,yunstanford/sanic,lixxu/sanic,ashleysommer/sanic