Build a general training tool for supervised training

[oysteijo]

There should be a general tool for loading training data and train a neural network supervised.
Say, call it general-trainer and it could take in a few command line options.

• Trainset - Filename.npz

• Verificationset - Filename.npz

• Neuralnet - filename.npz

• loss - string

• metrics - list of metrics

• Optimizer - String SGD, RMS prop, Adam or adamw

• Batch size - integer

• do_shuffle.

• Log - log_filename

• Early stopping - patience, idx, greater_is_better

• Model check point - filename, idx, greater_is_better, verbose

Then there could also be another tool that creates a new untrained neural network. Say, create-neuralnet. Just let this idea spin for a while,

[oysteijo]

OK - branch 'training_tool' has been created.

[oysteijo]

Pull request #65 created.