Hmm luzpaz repo seems to have a pretty old state. The Version I have installed says "1.1: July 2018 (FreeCAD 0.17)" in the Readme. I installed it in November 2018.
I also removed a lot of "print" statements so that the version works with 0.18 and Py3.
Should I create a pull request with the Version I have installed to update luzpaz repo? As the License says "GPL" I think this should not be a problem.
Then there would at least be a pretty much up to date version available until we know what happend to the original repo.