Test environments

local machine running Linux Ubuntu 18.04 LTS, R 4.1.0
win-builder (release and devel)
Windows Server 2012 R2 x64 (build 9600) running R 4.1.1 on Appveyor
R-hub
- Windows Server 2008 R2 SP1, R-devel, 32/64 bit
- Ubuntu Linux 20.04.1 LTS, R-release, GCC
- Fedora Linux, R-devel, clang, gfortran

R CMD check results

There were no ERRORs, WARNINGs, or NOTEs.

I have also run R CMD check on downstream dependencies of rebird. All packages passed.