[CODE] Reformatted source codes.

src/CSVReader/CSVReader.cpp

src/CrossValidator/CrossValidator.cpp

src/DataSet/DataSet.cpp

src/ErrorFunction/ErrorFunctions.cpp

src/ErrorFunction/ErrorFunctions.h

src/ErrorFunction/ErrorFunctionsMock.h

src/General/ExprtkWrapperSerialization.h

src/LearningMethods/GradientDescent.cpp

src/LearningMethods/GradientDescent.h

src/LearningMethods/GradientDescentBB.cpp

src/LearningMethods/GradientDescentSingleItem.cpp

src/LearningMethods/LearningSequence.cpp

src/LearningMethods/LevenbergMarquardt.cpp

src/LearningMethods/ParticleSwarm.cpp

src/LearningMethods/ParticleSwarm.h

src/NetConnection/ConnectionFunctionIdentity.cpp

src/Network/NeuralNetwork.cpp

src/Network/NeuralNetworkSum.cpp

src/Neuron/NeuronLogistic.cpp

src/Solvers/DESolver.cpp