One thing that disturbed me when discovering Lino earlier this week is the absence of a requirements / support specification (that is: python versions, windows support, etc). That information is normally available on the README file (so it shows up in the github repo page) or on the documentation home / first pages. But Atleast regarding python 3 support one has to go to the pypi classifiers to notice (or look at the setup.py). Maybe a note could be added to the README of the lino repo stating the versions it's known to work (or tested against).