Macro usv::svec

macro_rules! svec {
    ($($x:expr),*) => { ... };
    ($($x:expr,)*) => { ... };
}

svec! makes a string vector from an array of &str.

Example:

use usv::svec;
let items = svec!["a", "b", "c"];
assert_eq!(
    items,
    vec![
        String::from("a"),
        String::from("b"),
        String::from("c"),
    ]
);