Removing ipython as a dev dependency (nficano#533)

* Removing ipython as a dev dependency

* Updating Pipefile using Python 3.7 instead of 3.6

Author: rishabh-bhargava

Pipfile

@@ -5,7 +5,6 @@ verify_ssl = true
 
 [dev-packages]
 twine = "*"
-ipython = "*"
 flake8 = "*"
 black = "*"
 bumpversion = "*"