Added the R-Journal paper as Vignette
Added UMAP
Added NMF (thanks @topepo)
Added the possibility to return other data such as distance matrices/eigenvalues
Added Autoencoder
Added l1 PCA
Added getNDim
Added an ndim
parameter to many quality functions.
fixed bug in kPCA if inverse was not computable.
added autoencoder
Fixed kPCA predict function and documentation typos (@topepo #2)
Added predict and inverse functions
Added a function to extract rotation matrices from PCA and FastICA