I have just released pimatic-lg-smart-tv version 0.0.1.
Personally I have been using this plugin for almost 2 years now and it is stable. Just never got around to releasing it to the general public.
The plugin has been developed against a WebOS capable LG Smart Television, model LG OLED55B8PLA.
It should also work against similar models. Credits are due to Vincent Riemer as I started off improving his pimatic-lgtv, but the code has changed dramatically since.