Sem-Ver: bugfix Run flake8 in ci.

Signed-off-by: David Black <[email protected]>

Author: dbaxa

.travis.yml

@@ -7,7 +7,8 @@ python:
   - "3.7"
 install:
   - if [[ $TRAVIS_PYTHON_VERSION == 3.5 || $TRAVIS_PYTHON_VERSION == 3.6 || $TRAVIS_PYTHON_VERSION == 3.7 ]]; then pip install aiohttp==3.6.2 asynctest==0.13.0; fi
-  - pip install -q pycodestyle==2.3.1
+  - pip install -q pycodestyle==2.6.0 flake8==3.8.1
 script:
   - pycodestyle .
+  - if [[ $TRAVIS_PYTHON_VERSION == 3.5 || $TRAVIS_PYTHON_VERSION == 3.6 || $TRAVIS_PYTHON_VERSION == 3.7 ]]; then flake8 . ; fi
   - python setup.py test