Update package so it can be published again on CRAN

[iagogv3]

Dear Paul,

I updated the package with minor changes so it could be published again on CRAN, I believe. Do you want to accept the PR and send it again to CRAN. If not, is there some reason? Otherwise, I could place me as the maintainer (while keeping the original authors) and I would send to CRAN if it is fine for you.

Please, let me know your preference.

Thank you for your time.