What is it? What does it do? I’m kind of lost… 
the manual not clear? right click module, Plugin->Manual will get you there
Actually I failed to click the triangle on the README.md page. I thought links are highlighted with blue. But reading the guideline it starts to make sense. 
You have digged out one of the most awesome module in vcv. Look at eurorack function generator on YouTube and have fun! Also, self patch this thing!