How to add a new data set?

[juliohm]

Are there instructions somewhere to add a new dataset?

I am missing this dataset: https://github.com/cran/compositions/raw/master/data/juraset.rda"

[JuanVargas]

Several datasets from the ISLR Book second edition are missing, e.g., Advertising. Is there a way to add them? Thank you.

[juliohm]

@frankier should the linked PR get merged? Should this issue be closed?

[nalimilan]

Closed by #135.