Returns only functions actually defined in the package, excluding imports and re-exports
Examples
list_functions("MomX")
#> [1] "list_functions" "momx_conflicts"
#> [3] "momx_install" "momx_install_all_cran"
#> [5] "momx_install_all_github" "momx_install_core_cran"
#> [7] "momx_install_core_github" "momx_packages"
#> [9] "momx_packages_all" "momx_packages_core"
#> [11] "momx_packages_extended" "momx_repo"
#> [13] "momx_status" "momx_update"
#> [15] "momx_website" "rinse"
