FYI: This was the only ToneGodGui fork that worked for me out of the box ... when updating a project from 3.0 to 3.1.
Compiled it using gradle build, but the build finished early with errors. But ... the required jar file was there in the build directory (Yay!!)
To implement ...
I just had to change LabelElement to Label
label.getFont(bitmapFont) to label.getFont(fontLocatorString).
I thought this info might help someone else.
Good going Atomixnmc ... and thanks.