Examples in the README do not compile

[chanced]

fn main() {
    use qp_trie::Trie;

    let mut trie = Trie::new();

    for i in 0u8..3 {
        for j in 0u8..3 {
            trie.insert([i, j], i + j);
        }
    }

    for i in 0u8..3 {
        trie.remove([1, i]);
    }

    assert!(trie.iter().all(|(&key, _)| key[0] != 1));
}

error[E0308]: mismatched types
   --> src/main.rs:13:21
    |
8   |             trie.insert([i, j], i + j);
    |                         ------  ----- this is of type `u8`, which causes `trie` to be inferred as `Trie<[u8; 2], u8>`
    |                         |
    |                         this is of type `[u8; 2]`, which causes `trie` to be inferred as `Trie<[u8; 2], u8>`
...
13  |         trie.remove([1, i]);
    |              ------ ^^^^^^
    |              |      |
    |              |      expected `&_`, found `[u8; 2]`
    |              |      help: consider borrowing here: `&[1, i]`
    |              arguments to this method are incorrect
    |
    = note: expected reference `&_`
                   found array `[u8; 2]`
note: method defined here
   --> /Users/chance/.cargo/registry/src/github.com-1ecc6299db9ec823/qp-trie-0.8.1/src/trie.rs:316:12
    |
316 |     pub fn remove<Q: ?Sized>(&mut self, key: &Q) -> Option<V>
    |            ^^^^^^

For more information about this error, try `rustc --explain E0308`.

this one is fixed by referencing [1, i]:

-    trie.remove_prefix([1]);
+    trie.remove_prefix(&[1]);

fn main() {
    use qp_trie::Trie;

    let mut trie = Trie::new();

    for i in 0u8..3 {
        trie.extend((0u8..3).map(|j| ([i, j], i + j)));
    }

    trie.remove_prefix([1]);

    assert!(trie.iter().all(|(&key, _)| key[0] != 1));
}

error[E0308]: mismatched types
   --> src/main.rs:10:24
    |
7   |         trie.extend((0u8..3).map(|j| ([i, j], i + j)));
    |              ------ here the type of `trie` is inferred to be `Trie<[u8; 2], u8>`
...
10  |     trie.remove_prefix([1]);
    |          ------------- ^^^
    |          |             |
    |          |             expected `&_`, found `[{integer}; 1]`
    |          |             help: consider borrowing here: `&[1]`
    |          arguments to this method are incorrect
    |
    = note: expected reference `&_`
                   found array `[{integer}; 1]`
note: method defined here
   --> /Users/chance/.cargo/registry/src/github.com-1ecc6299db9ec823/qp-trie-0.8.1/src/trie.rs:330:12
    |
330 |     pub fn remove_prefix<Q: ?Sized>(&mut self, prefix: &Q) -> Trie<K, V>
    |            ^^^^^^^^^^^^^

For more information about this error, try `rustc --explain E0308`.

fn main() {
    use qp_trie::Trie;

    let mut trie = Trie::new();

    for i in 0u8..3 {
        trie.extend((0u8..3).map(|k| ([i, j], i + j)));
    }

    let mut iter = trie.iter_prefix([1]);

    assert_eq!(iter.next(), Some((&[1, 0], &1)));
    assert_eq!(iter.next(), Some((&[1, 1], &2)));
    assert_eq!(iter.next(), Some((&[1, 2], &3)));
    assert_eq!(iter.next(), None);
}

error[E0425]: cannot find value `j` in this scope
 --> src/main.rs:7:43
  |
7 |         trie.extend((0u8..3).map(|k| ([i, j], i + j)));
  |                                           ^ help: a local variable with a similar name exists: `i`

error[E0425]: cannot find value `j` in this scope
 --> src/main.rs:7:51
  |
7 |         trie.extend((0u8..3).map(|k| ([i, j], i + j)));
  |                                                   ^ help: a local variable with a similar name exists: `i`

error[E0308]: mismatched types
   --> src/main.rs:10:37
    |
10  |     let mut iter = trie.iter_prefix([1]);
    |                         ----------- ^^^
    |                         |           |
    |                         |           expected `&_`, found `[{integer}; 1]`
    |                         |           help: consider borrowing here: `&[1]`
    |                         arguments to this method are incorrect
    |
    = note: expected reference `&_`
                   found array `[{integer}; 1]`
note: method defined here
   --> /Users/chance/.cargo/registry/src/github.com-1ecc6299db9ec823/qp-trie-0.8.1/src/trie.rs:190:12
    |
190 |     pub fn iter_prefix<'a, Q: ?Sized>(&'a self, prefix: &Q) -> Iter<'a, K, V>
    |            ^^^^^^^^^^^

Some errors have detailed explanations: E0308, E0425.
For more information about an error, try `rustc --explain E0308`.