Paulus Schoutsen 429bbc05dc
Add WS subscription command for MQTT (#21696)
* Add WS subscription command for MQTT

* Add test

* Add check for connected

* Rename event_listeners to subscriptions
2019-03-10 20:07:09 -07:00
..
2019-03-10 19:55:36 -07:00
2019-02-27 16:10:40 -05:00