Small update to improve confusing error message reporting, and improve some documentation.
The package was tested on the following platforms:
- Mac (R: release)
- Windows (R: devel, release, 4.1)
- Ubuntu (R: devel, release, oldrel-1)
There is a note when checking with remote checks about the non-CRAN package rnaturalearthhires. cartographer needs to check whether this package is installed to avoid triggering an interactive menu in rnaturalearth (which is on CRAN) with installation instructions.