Additional ISO 3166-1 alpha-3 country code. #151
Description
Hi @benkeen, recently ran into a situation where it is necessary to select country and its ISO 3166-1 alpha-3 country code which is 3 letters long ex. USA for United States.
I can do a PR to add a new field for countries countryShortCodeAlpha3, but i want to know your opinion on that.