Countries list from ISO 3166-1

Countries list from ISO 3166-1

Usage

After cargo install countries-tools:

Examples

```rust use countries_tools::{Country, CountryAlpha2};

asserteq!(Country::from(CountryAlpha2::ES).shortname(), "Spain"); ```

```rust use countries_tools::{Country, CountryAlpha3};

asserteq!(Country::from(CountryAlpha3::USA).shortname(), "United States of America"); ```

```rust use countries_tools::Country;

asserteq!(Country::tryfrom(392).unwrap().short_name(), "Japan"); ```

About this crate

As much methods as possible are const fn to allow compile-time computation and optimize runtime performance.

Also this crate is no_std compatible. The crate size is kept as small as possible and also the impact on the binary size.