v1.9.0

Pulled in more updates from core (just minor changes). Config entry version has been reverted back to version 1 after feedback from PR to core. This forces everyone to remove devices and add them again, should be the last time. The benefit here is that we maintain backwards compatibility when jumping between Home Assistant versions. Devices are clearly marked under the Integrations page and everything can be fixed from frontend (no fiddling with files this time). This is my bad as I was not aware of how versions are supposed to work, sorry!

The "reconfiguration" option has been removed. No one probably used it.

This version requires Home Assistant 2021.11.0 or later.