Added fixes for parallelization for newer versions of TensorFlow, add…

…ed configurable ports, dropped support for 2.7

Prediction fix for single label values in Python 3

Made some fixes and changes to the save/load methods.

Small changes on variable reuse

Added sparkflow version 0.4.1 that includes better graph support

Merge pull request #14 from lifeomic/python3-support

Python3 support

Tensorflow > 1.7 support and Python 3 support

Added a loss callback feature, and utility functions to load tensor f…

…low graph to spark model

Added a loss callback feature, and utility functions to load tensorfl…

…ow graph to spark model

Added more bug fixes to version 0.2 for sparkflow