* Add config flow support to opentherm_gw.
Bump pyotgw to 0.5b0 (required for connection testing)
Existing entries in configuration.yaml will be converted to config entries and ignored in future runs.
* Fix not connecting to Gateway on startup.
Pylint fixes.
* Add tests for config flow.
Remove non-essential options from config flow.
Restructure config entry data.
* Make sure gw_id is slugified
6ae908b883