pytest==3.1.2
pylint==1.7.1
tox==2.7.0
mypy==0.511
pytest-cov==2.5.1

pytest==3.1.2
pylint==1.7.1
tox==2.7.0
mypy==0.511
pytest-cov==2.5.1
isort==4.2.15

Add isort to development requirements
Add isort to development requirements
