Macaon train decoding (devScore) on cpu in parallel

decoder/include/Decoder.hpp

decoder/src/Decoder.cpp

reading_machine/include/Classifier.hpp

reading_machine/include/ReadingMachine.hpp

reading_machine/src/Classifier.cpp

reading_machine/src/ReadingMachine.cpp

torch_modules/include/NeuralNetwork.hpp

torch_modules/src/NeuralNetwork.cpp

trainer/src/MacaonTrain.cpp