get_shalla_data.RdShallalist service was discontinued in January 2022. This function downloads
the last archived copy (from 1/14/22) that we have preserved on GitHub.
The original service at shallalist.de is no longer available.
Downloads, unzips and saves the final version of shallalist data. By default, saves shalla data
as shalla_domain_category.csv.
get_shalla_data(outdir = "./", overwrite = FALSE)if (FALSE) { # \dontrun{
get_shalla_data()
} # }