JMES Path

# Short Description of the issue
Hi,
I've started using JupyterLab and I noticed JMESPath libraries are not included in python. Could you add them for everyone? Moreover you support python 3, but I still do have project in python2, could be possible have both versions available?

# Summary of proposed changes
Add JMESPath python libraries (http://jmespath.org/libraries.html);
Python 2 available.

Cheers,
Riccardo

No files, tests, or entry points are identified in the issue. Start by inspecting the repository's dependency and notebook-environment configuration, then determine which JMESPath libraries and Python 2 support are intended; done means both requested Python versions and the agreed libraries are available and verified.

Written by the indexing model from the issue text.