pytest==2.5.2
mock==1.0.1
flake8==2.1.0
coverage==3.7.1

pytest==2.7.3
mock==1.0.1
flake8==2.1.0
coverage==3.7.1
pdbpp==0.8.3

Update the dev requirements to work with python 3.5
Update the dev requirements to work with python 3.5
