Return iterator of matching routes instead of first match

[tqwewe]

For something like fall-through routing, it would be useful to return an iterator of values that match the route.

An example might be:

let mut router = Router::new();
router.insert("/users/:id", 1);
router.insert("/users/:name", 2);
router.insert("/users/*", 3);

let mut matches = router.at("/users/ari").iter();
assert_eq!(matches.next(), Some(1));
assert_eq!(matches.next(), Some(2));
assert_eq!(matches.next(), Some(3));
assert_eq!(matches.next(), None);

[ibraheemdev]

This would be a pretty fundamental change to the router. For fallback routing I was thinking of supporting a much simpler model, where conflicting inserts would return the conflicting value. From there you could handle routing guards, etc. yourself.

[tqwewe]

That sounds simpler. In my case, we forked matchit and modified it to our needs, so if it's not in the scope of matchit, feel free to close this issue