Bug fix

In this release I have fixed a bug and ported code to new dplyr API

Test environments

macOS Mojave: R 3.6.1
R-Hub (Fedora R-devel, Ubuntu R-release)
winbuilder (R-devel, R-release)

R CMD check results

There were no ERRORs, WARNINGs

Downstream dependencies

There is no downstream dependency yet