* implement correct state for rflink cover
* Fix linting error
* invert logic as local testing pointed out it should be reversed
* add period at the end to satisfy the linter
* second try on rflink / cover
* no newline at end of file
* changed entity
* fixed comments from pvizeli
* removed :
* removed return 'unknown'
* Fixed comments from Rytilahti
* removed newline
* Reverted to None
* cleanup
* Cleanup