I'm trying to look at the most recently updated currency.php patch (from early december 2017) to try to understand it and see if I can add new currencies to it. It only gets data from a small handful of the available currencies. I have the other API's i'd like to interact with and import the data, but the currency.php file is very confusing and I can't see how to do this. Does anyone know how to do this? Sorry this is vague, but any initial advice on how to deal with this problem would be really helpful.