Deprecated activation functions?

[fdetsch]

I get the following error when using activation functions elu, lelu, and selu:

InvalidActivationFunction: No such activation function: 'elu'

(similar for the latter two). Have these been deprecated? If so, they should probably be removed from Overview of builtin activation functions in order to avoid confusion.

[jongdetim]

Can confirm. Had to implement my own activation functions.