NNFS - v1.0 - Pre-release

First pre-release of the NNFS library.

This release includes the following features:

• Dense layer
• Activation layers (ReLU, Sigmoid, Tanh, Softmax)
• Loss function (Categorical Cross Entropy)
• Optimizer (SGD, RMSProp, Adagrad, Adam)
• Metrics (Accuracy)
• Neural network (Sequential)
• Data loader (MNIST)
• Example (MNIST classification)

made with ❤️ by @appxpy