Test environments

local OS X install, R 3.6.0
local Ubuntu install, R 3.6.1
ubuntu 14.04.5 (on travis-ci), oldrel, release, devel
r-hub:
- Windows Server 2008 R2 SP1, R-devel, 32/64 bit
- Ubuntu Linux 16.04 LTS, R-release, GCC
- Fedora Linux, R-devel, clang, gfortran

R CMD check results

0 errors | 0 warnings | 0 note

There are no reverse dependencies.