Country codes, their numbers and names.
## What is ISO 3166-1?
> ISO 3166-1 is part of the ISO 3166 standard published by the International
> Organization for Standardization (ISO), and defines codes for the names of
> countries, dependent territories, and special areas of geographical
> - [Wikipedia](http://en.wikipedia.org/wiki/ISO_3166-1)
test parse ... bench: 44 ns/iter (+/- 13)
test parse_name ... bench: 50 ns/iter (+/- 16)