.Rproj file in repository master branch

Hi @tkariyat,

I just noticed this file: https://earth.bsc.es/gitlab/external/cstools/-/blob/2234111523fd7027fd51066a67e9a3433c079616/cstools.Rproj in the repository master branch. It seems like it's a file produced by RStudio that shouldn't be there.

Could you please create a new branch and:

1. Remove this file and commit the removal
2. Add *.Rproj to .gitignore so these files are not picked up by git

and then merge the branch to master?

Thanks,

Victòria