Test environments

Local
- R version 3.6.0 (2019-04-26)
- Platform: x86_64-apple-darwin15.6.0 (64-bit)
- Running under: macOS High Sierra 10.13.4
Travis-CI
- R versions 3.5.3 (2017-01-27), 3.6.2 (2017-01-27), and Under development (unstable) (2020-01-09 r77648)
- Platform: x86_64-pc-linux-gnu
- Running under: Ubuntu 16.04.6 LTS
Appveyor
- R version 3.6.2 (2019-12-12)
- Platform: x86_64-w64-mingw32 (64-bit)
- Running under: Windows Server 2012 R2 x64 (build 9600)
RHub (on Jan. 9, 2020)
- Fedora Linux, R-devel, clang, gfortran
- Ubuntu Linux 16.04 LTS, R-release, GCC
- Windows Server 2008 R2 SP1, R-devel, 32/64 bit
Win-builder
- R 3.6.2 (2019-12-12), Under development (unstable) (2020-01-03 r77630)
- Platform: x86_64-w64-mingw32 (64-bit)

All checks reporting OK.

Downstream dependencies

Nothing to report.