This is a re-submission because of a rejection from an automated check that failed on debian. I have fixed the error and am resubmitting.
- ubuntu 16.04, R 3.5.1
- ubuntu 16.04, (on travis-ci),
- ubuntu 14.04 (on travis-ci), R devel [2018-11-29 r75719]
- win-builder (devel [2018-11-28 r75713] and release)
0 errors | 0 warnings | 0 note
all OK