Update coverage to 5.3.1#64

pyup-bot wants to merge 1 commit intomasterGabrieltggv/libpythonpro:masterfrom

pyup-update-coverage-5.1-to-5.3.1Gabrieltggv/libpythonpro:pyup-update-coverage-5.1-to-5.3.1Copy head branch name to clipboard