Objective:
fixed some package version issues on a clean venv set up, when building a dev set-up following the development_guidelines from the original zipline doc (separate PR to update the doc for zipline-live).
Coverage remained the same at 86.405% when pulling 54de50ce9fa135c1a7a754a4d4d9fb941fc4e493 on florentchandelier:bug/setup_dev_venv into a014c6fbad8e65231f1382210d0831fc4feb75eb on zipline-live:master.
Objective: fixed some package version issues on a clean venv set up, when building a dev set-up following the development_guidelines from the original zipline doc (separate PR to update the doc for zipline-live).
Results: Depency fix. Nosetests cleared.