* checking R code for possible problems ... NOTE
File ‘olsrr/R/zzz.R’:
.onAttach calls:
message("A new version of olsrr is available with bug fixes and new features.")
message(msg, "\nWould you like to install it?")
Package startup functions should use ‘packageStartupMessage’ to
generate messages.
See section ‘Good practice’ in '?.onAttach'.