PGA with galgebra usable for calculations?

I am interested in performing analytic calculations in PGA with galgebra, but until now I was not able to figure out how to perform e.g. regressive products with it. I also read through docs and the two other threads on this topic, but found no obvious answers.

I cloned the github repo GitHub - pygae/galgebra: Symbolic Geometric Algebra/Calculus package for SymPy for my calculations. I also read was that @meuns wanted to merge his effort into the mentioned github repo (the PR is still open). Is there anything I missed? Or is there any news to it? @meuns @eric-wieser

Thanks for your help!

Best wishes
Johannes