-r requirements.txt
pytest==3.6.1
pytest-cov==2.5.1
wheel==0.31.1
matplotlib==2.2.2

-r requirements.txt
pytest==3.6.1
pytest-cov==2.5.1
wheel==0.33.1
matplotlib==2.2.2

Update wheel from 0.31.1 to 0.33.1
Update wheel from 0.31.1 to 0.33.1