[code-quality] flake8 on windows

Hi, According to the flake8 docs you can set your preferences in ~/.config/flake8 on Linux -- and this works fine. But the docs don't mention Windows. I tried \User\mark\ and I tried the root of my Python project (as flake8, as tox.ini, and as setup.cfg), but nothing seemed to work. Best wishes, -- Mark Summerfield, Qtrac Ltd. DiffPDFc windows command line PDF comparison tool http://www.qtrac.eu/diffpdfc.html