Suggestion: Force use similar language

Hello,

I have a suggestion regarding language switch. Can you make option that user can select similar language translation if there is no translation for user’s language.

Serbian, Croatian, Bosnian are very similar languages, and should be able to use any of these if local language for plugin/theme translation is not available.

I’m sure there are many world languages that have certain similarities, but users have to change locale manually in the translation folder, and match country codes on the translation files etc. which in most cases creates errors later on.