0.1.2 - new websocket library - revised play path parsing

The main feature of this release is a major update to the https://github.com/websocket-client/websocket-client library. For a while this library was stale - but it is now being maintained again - and the maintainers have closed more that 200 issues! I'm hopeful this will fix some problems where the library wouldn't reconnect to a roon core after the core it's been turned off for a while.

The other change is to the utility function used to split a browse path into a list for use by play_media. This didn't support quoting - which stopped anyone playing genres suck as pop/rock which contained the path delimiter. The new code allows quoting.