Changes in version 1.8.0                        

  - redo documentation

                 Changes in version 0.3.0 (2018-06-21)                  

  - add Rectified Linear Unit (ReLU)

  - add leaky Rectified Linear Unit (leaky ReLU)

  - redo documentation

                 Changes in version 0.2.0 (2016-08-14)                  

  - add vignette

  - add tanh derivative

                 Changes in version 0.1.0 (2016-04-25)                  

  - initial release

  - implement logistic and Gompertz

  - implement inverses (logit and inverse Gompertz)

  - implement SoftMax