Tweak tox.ini in an attempt to fix GitHub #22
Tweak tox.ini in an attempt to fix GitHub #22

skyfielders/python-skyfield,exoanalytic/python-skyfield,skyfielders/python-skyfield,GuidoBR/python-skyfield,exoanalytic/python-skyfield,ozialien/python-skyfield,GuidoBR/python-skyfield,ozialien/python-skyfield