floresp-v2.0-rc.3: https://github.com/openlanguagedata/flores
glottolog-5.1: https://github.com/glottolog/glottolog
languages.csv: generated from https://query.wikidata.org/ using the languages.rq query
LanguageCodes.tab: https://www.ethnologue.com/
ScriptCodes.csv: https://www.unicode.org/iso15924/iso15924-codes.html