unable to capture trailing %2F in url

lets say you have
```php
$router->get("/([\s\S]+)",function(){
var_dump(func_get_args());
});
```
the router will not differentiate between the url `/foo` and `foo%2F` and `foo%2f%2f`, any/all trailing `%2F`'s will be trimmed away by the router before going to the callback function

Reproduce the example route with `/foo`, `foo%2F`, and `foo%2f%2f`, then trace the router's URL parsing and matching entry point. Done means the callback can distinguish the encoded trailing slashes instead of having them trimmed before dispatch.

Written by the indexing model from the issue text.