adamcooke/vat-rates — pull request #6 by tkoenig (2014-11-07 11:40:58+00:00)
Title: use ISO_3166 for country codes

See http://en.wikipedia.org/wiki/ISO_3166

I'm not sure where the original country codes came from, but there where some countries using the same code (Germany/Denmark). I'm not sure if this is a bug, but it makes it easer to work together with other gems like https://github.com/jim/carmen