Update pytest to 3.8.2#169

pyup-bot wants to merge 1 commit intomastercclauss/pythonista-module-versions:masterfrom

pyup-update-pytest-3.0.5-to-3.8.2cclauss/pythonista-module-versions:pyup-update-pytest-3.0.5-to-3.8.2Copy head branch name to clipboard