MemNet v0.2.0 win64

• fixed several issues preventing loss functions working correctly
• added support for several new cross entropy loss functions
• added support for the binary focal loss function
• added logit variants of some loss functions
• added support for loading data from wav audio files
• added support for softmax on the output layer
• added ability to run net and show/save net output
• added ability to set activation function for each layer
• added ability to disable/enable memory for each layer
• several other new features and improvements