Do you have a scripted process for updating code for ISO 3166?

[zachawilson]

I see that for ISO 3166 (and also currency) you moved from parsing a .json file to baking the data into the code.

What was the reason for this change? (I assume performance, but I do not know if there are other reasons)
Do you have a scripted process for updating / generating the code from a .json file?

Thank you for creating this repo.