GarHAge v1.1.0

This release adds the feature to publish a birth message ("online") when connecting to an MQTT broker and a last-will-and-testament message ("offline") when disconnecting. Starting in Home Assistant 0.54 (assuming my PRs get merged) you will be able to define an "availability_topic" parameter in configuration.yaml that takes advantage of this functionality to display the cover as "unavailable" if GarHAge goes offline.

README.md has also been updated with several example automations to use in Home Assistant, including actionable iOS notifications.