Test environments local: darwin15.6.0-3.6.0 travis: 3.1, 3.2, 3.3, oldrel, release, devel r-hub: windows-x86_64-devel, ubuntu-gcc-release, fedora-clang-devel win-builder: windows-x86_64-devel R CMD check results 0 errors | 0 warnings | 1 note This is a new release.