CI buils with minimal and latest requirements#500

Merged

williamFalcon merged 2 commits intoLightning-AI:masterfrom Borda:ci_min-req

Nov 25, 2019

+28-11

Commits on Nov 13, 2019

install nim req.
Borda
committed

Commits on Nov 16, 2019

drop Cython
Borda
committed