Fixes from @stephenpapierski and @njobrien1006, great work while i've been away!
- Fixed release badge in README (currently reports no releases/repo found)
- Discovered previous undocumented shutdown mode (Grill goes to shutdown mode between cool_down and sleep
- Probe State sensor should theoretically work on new Traeger Timberline with dual probes, but I don't have a way to test that
- Closes: #37
- Implement autodisconnect but set to false.
- Fix connect switch to properly display and connect disconnect immediately.