- macOS 10.13.3, R version 3.4.3.
- Ubuntu 14.04, x86_64-pc-linux-gnu, via Travis-CI, (oldrel, devel and release).
- winbuilder, x86_64-w64-mingw32 (64-bit), (devel).
There were no ERRORs or WARNINGs or NOTEs.
I have also run R CMD check on downstream dependencies. All packages that I could install passed. No ERRORs or WARNINGs found.