R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'pre'

pre::Missingness |  | Dealing with missing data in fitting prediction rule ensembles | HTML | source | R code
pre::Tuning |  | Tuning parameters of function pre | HTML | source | R code
pre::relaxed |  | More sparse and relaxed: Fitting rule ensembles with the relaxed lasso | HTML | source | R code
pre::speed |  | Faster computation | HTML | source | R code