Release v2021.4.3

This is a config flow component.

WARNING: If you are updating from a previous version you should delete any configuration text related with this integration from your configuration.yaml, since yaml configuration is now NOT supported and this integration will STOP to work (if you don't do it)!.

This release maintains the basic funcionality of the previous one, but some errors were fixed, in particular, Bulgaria can now chose its language as bu (issue #10).

A very useful set of automations are in the documentation.