Hey Matt,
I'm having problems adding this addon to my game.
3.1 Godot on Mac OSX.
I've tried adding all the "addon" folder contents to an add on folder in my game, but then there is no option to enable the add-on.
Then I tried auto-loading the files like you had in your test scene. Still no dice.
So I tried adding in my own custom JSON file created through your dialogue creator, then the example game would instantly crash anytime I tried to load my custom JSON.
Help please?