- Move HTTP connect/disconnect logic to networkManager
- If a talk fails due to socket error, HTTP transport error or
nio bad response that might change, retry every 2s until success
- Clean up some leftover debug prints
For any name not found in rooms data, rely on new
nio.HttpClient.get_displayname() function to get and cache it,
e.g. for our own name if no room is joined and past events from users
who left the room.
@futurize now returns PyQtFuture objects, wrapper for the
concurrent.futures.Future objects that can be used from QML,
to ensure name retrieval does not block the GUI.
