Support of Kasa EP25 and others requiring authentication

[Andy P]

Hi, hoping to use this plugin with my Kasa EP25 devices. According to the Github info, it is the intent to support any devices in the python-kasa library. That library lists the EP25 but with an asterisk saying new devices need authentication. Do you plan to support that? Currently it just responds with 

ERROR Controller:_add_manual_devices: Unsupported device 192.168.3.118:

Thanks, Andy

[KSP1138]

Also getting "Unsupported device" with a new HS220 I tried to add today (hardware version 3.26, firmware 1.1.1).  No issues with older HS220's running 3.0/1.0.11.