Some minor changes: Convergence criterion for Minima. Take the last 20 steps, exluding the 1st minima at (0,0,0)

Adding prediction and plots for test data set. Playing with parameter settings putting them as constants.

Experimenting with RNNs from Auriel Geron's book examples - Introduction into ML with Scikit-Learn, Keras, Tensorflow - Chapter 15 Working with Sequencec by using RNNs and CNNs