I've been using [https://addons.mozilla.org/en-US/firefox/addon/diccionario-espa%C3%B1ol-m%C3%A9xico/ Spanish (Mexico)] dictionary for a few years as my default spell checking dictionary. However, it lacks a lot of common words and local idioms that I use everyday. How can I create a new dictionary for Spanish (Colombia), or contribute to the Mexican one? I can't find a Github repo with the project.