Api v0.17.0

Critical changes:

! Dropped Python 2.7 support.

Additions:

+ Added deployment workflows

Changes:

* Replaced imp (deprecated) with importlib
* Fixed bug with file fallbacks unittest, not using os defined path sep.
* Refactored assertEquals >> assertEqual
* Updated readme with new badges and formatting

Removals:

- removed TravisCI

Notes:

... Packaging graph will now error out if it fails to build and upload to the test PyPi server.
... fixed bug caused by updating to importlib

Supported Graph Versions

This release saves 1.17 graphs.
This release includes backwards compatibility for graph versions as old as 0.45 .

Pip Installation

From a Python(2 or 3) environment run the following command:
pip install nxt-core