Daniel Høyer Iversen 1bd31e3459 Change STATE_UNKOWN to None (#20337)
* Change STATE_UNKOWN to None

* Change STATE_UNKOWN to None

* tests

* tests

* tests

* tests

* tests

* style

* fix comments

* fix comments

* update fan test
2019-01-24 08:20:20 +01:00
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