notes to myself

[jwijffels]

• https://github.com/shorschig/Rcpp-CUDA-TestPackage/blob/master/src/Makevars for cuda + R + darknet
• replace image.darknet with code from https://github.com/AlexeyAB/darknet, factor out LSTM/GRU/RNN for text and for images (maybe create a different package for images / text)