Update flake8 to 3.7.4#87

pyup-bot wants to merge 1 commit intodevelopTypecraft/typecraft_python:developfrom

pyup-update-flake8-3.5.0-to-3.7.4Typecraft/typecraft_python:pyup-update-flake8-3.5.0-to-3.7.4Copy head branch name to clipboard