Initial release from private repository

Toy example of a python script that instantiates and trains a PyTorch neural network on the FashionMNIST dataset with several common and useful features:

• Choose between two different neural network architectures
• Make architectures parametrizable
• Read input arguments from config file or command line
  • (command line arguments override config file ones)
• Download FashionMNIST dataset if not already downloaded
• Monitor training progress on the terminal and/or with TensorBoard logs
  • Accuracy, loss, confusion matrix