Update flake8 from 3.7.5 to 3.7.6
Update flake8 from 3.7.5 to 3.7.6
exercism/python,exercism/python,N-Parsons/exercism-python,jmluy/xpython,behrtam/xpython,exercism/xpython,jmluy/xpython,behrtam/xpython,smalley/python,N-Parsons/exercism-python,smalley/python,exercism/xpython