Supports larger screen on Pebble Time 2.
Retries after 3 seconds after an invalid, opening or closing response.
Added a glance (status on menu) to show last door status.
Added a menu icon, compiled with SDK4, removed Beta designation.
Compiled in SDK3 and made to look semi-reasonable on Pebble Round.
Now leaves the graphic unchanged until the door responds to a status request.
Resets to door zero after retrieving a list of doors.
Fixed the display of error messages.
Removed the splash screen, which wasn't particularly useful.
Adds time to last state change to the display.
Invalid response from controller now displays "???".