v0.21.0-refactor.beta.2

This iteration of the refactoring should no longer break your setup. It will identify if you are coming from the previous way of doing things and automatically upgrade the corresponding config_entries. The first load might take a bit longer, but after the upgrade, the integration should start much faster when HA starts.

Downgrade is also possible and shouldn't be a problem either. All your entities remain unchanged.

Please let me know how this works for you (good and bad) in issue #178 before I create a full release from this.