Fix: Some request path segment is missing.

Some request path segment is missing when that segment is 0.

Example url: ```http://test.loc/collections/best-seller/0/83```
When I call ```print_r(Request::segments());```

I get this result.

```
array(3) [
    string (11) "collections"
    string (11) "best-seller"
    string (2) "83"
]
```

It happen because ```array_filer()``` remove 0 from array.