countries-maritime-500m-extended (npm): Based on [simonepri/geo-maps/countries-maritime-500m](https://github.com/simonepri/geo-maps/tree/master/tpls/npm/countries-maritime)  but extended with ISO 3166-1 Alpha-2 country codes.
Keywords: geo-maps|countries-land|world|earth|country|countries|map|maps|political|administration|land|lands|maritime|maritimes|coastline|coastlines|borders|boundary|bounds|bound|confine|confines|coordinate|coordinates|OSM|GeoJSON|OpenStreetMap|NaturalEarth|alpha-3|alpha-2|country code|3166|ISO