v2-3-2

Evaluation engine version: 2.
Model version: 3.
Decision engine version: 2.

Have a new version of the AI model. This one is better in that it doesn't score every move the same. I introduced cross-validation in the model training process. The outstanding issues are:

1. The model doesn't think that less material is equivalent to losing. After sacking a rook and a bishop, it saw its position as better than before.
2. The decision engine incorrectly thinks pawns can jump over pieces from their home rank.