v0.8.1

Fixed

• Fix AttributeError when you use WebSockets.
  Contributed by Robert Chmielowiec (@chmielowiec) in #36

• Fix asyncio.InvalidStateError in the _on_connect callback.
  Contributed by Maxim Shmalovsky (@vitalalerter) in #31

• Fix "Future exception was never retrieved" on disconnect.
  Contributed by Martin Hjelmare (@martinhjelmare) in #25

• Fix connect so it no longer blocks the event loop.
  Contributed by Øystein Haug Olsen (@oholsen) in #23