activation function option

[targos]

currently we can only have the same activation function for all layers. is it normal for FNN or the option is just missing?

[jajoe]

the option is missing, but I've seen that generally we use the same activation function for all layers with FNN (that's not the case with other types of neural networks). So that's not a huge problem for the FNN.

[yawetse]

@targos could you add the feature to specify a different activation function for the output layer?