Both supporting 2.7 like before, and 3.5+ with compatible lib dependencies. Might want a pip install only for python3 and drop the Makefile.
- Move desktop/ext-py to a git sudmodule
- Simplify requirement.txt
- Port database migrations
- Provide build module and ship to pypy
As of March 10th 2020: Py 3.6 to 3.8 work