Feedforward and NARX neural network library using visual studio 2017 and eigen library

• Multithreading support with and without openmp

• Example works with MNIST handwritten digit database converted to csv. Best result was 98.97% accuracy after 73 epochs

• A NARXNN was trained using 3 images of landscapes found on google (converted to 100 x 100 bmp format 256 colors) and this was the result