- local OS X install, R 3.5.1
- Ubuntu xenial (on travis-ci), R 4.0.0
- win-builder (devel and release)
There were no ERRORs or WARNINGs or NOTEs
There was 1 NOTE (only in the 'win-builder'):
- Found the following (possibly) invalid URLs: http://ggplot2.org/ https://cran.r-project.org/web/packages/RColorBrewer/RColorBrewer.pdf https://www.rstudio.com/products/rpackages/devtools/