Please add the language code yec to the list of language codes supported for monolingual text values.
Usage example: [[ https://www.wikidata.org/wiki/Q1365342 | Yeniche ]]is a language mostly spoken by the Yeniche people a itinerant group who mostly live in Western Europe. It is based on Romani, Yiddish and Rotwelsch. Adding the language can be useful for Yeniche related Wikidatas like