Fix Travis YAML so that it now parses
fixing botched
@@ -8,7 +8,7 @@ matrix:
- "3.4"
- "3.5"
- "3.6"
- - "3.7"
+ - python: "3.7"
dist: xenial # required for Python >= 3.7 (travis-ci/travis-ci#9069)
install: pip install flake8
before_script: flake8 . --count --show-source --statistics
