Price formatting for Team Fortress 2 items.
```rs use tf2_price::Currencies;
let currencies = Currencies { keys: 5, // metal values are counted in weapons metal: 42, };
println!("{}", currencies); // "5 keys, 2.33 ref"
let currencies = Currencies::try_from("5 keys, 2.33 ref").unwrap(); // Currencies { // keys: 5, // metal: 42, // } ```
MIT