## Test environments
* local OS X install, R 3.6.1
* ubuntu 14.04 (on travis-ci), R 3.6.1
* win-builder (devel and release)
* r-hub fedora, debian, windows

## R CMD check results

0 errors | 0 warnings | 1 note

* This is a update/fix release.

- updates the core included C library
- fixes the CRAN check issues identified by Kurt