literally 0.1.1

When you literally just want a literal of the std::collections types.

# use std::collections::{HashMap, HashSet};
# use literally::{hmap, hset};
let m: HashMap<String, HashSet<String>> = hmap!{ 
"key" => hset!{
"value"
}
};
assert_eq!(m.get("key").unwrap().get("value"), Some(&"value".to_string()))