Incorrect hasher for AlignedBytes

[V0ldek]

Describe the bug

Implementation of std::hash::Hash for AlignedBytes is incorrect.

MRE

use aligners::{alignment::One, AlignedBytes, AlignedSlice};
use std::{
    collections::hash_map::DefaultHasher,
    hash::{Hash, Hasher},
};

let bytes1: AlignedBytes<One> = AlignedBytes::new_zeroed(4);
let bytes2: AlignedBytes<One> = AlignedBytes::new_zeroed(4);

let mut s1 = DefaultHasher::new();
bytes1.hash(&mut s1);
let h1 = s1.finish();

let mut s2 = DefaultHasher::new();
bytes2.hash(&mut s2);
let h2 = s2.finish();

assert_eq!(h1, h2);

Expected behavior
Sequences of bytes with the same contents should have equal hashes.

Workarounds (optional)
Casting to &[u8] and then hashing works:

use aligners::{alignment::One, AlignedBytes, AlignedSlice};
use std::{
    collections::hash_map::DefaultHasher,
    hash::{Hash, Hasher},
};

let bytes1: AlignedBytes<One> = AlignedBytes::new_zeroed(4);
let bytes2: AlignedBytes<One> = AlignedBytes::new_zeroed(4);

let mut s1 = DefaultHasher::new();
let slice1: &[u8] = &bytes1;
slice1.hash(&mut s1);
let h1 = s1.finish();

let mut s2 = DefaultHasher::new();
let slice2: &[u8] = &bytes2;
slice2.hash(&mut s2);
let h2 = s2.finish();

assert_eq!(h1, h2);

Proposed solution (optional)
The hash implementation hashes the pointer to the slice. It should just delegate to [u8]'s impl of Hash.

Desktop (please complete the following information):

• Rust version: any
• Target triple: any
• Features: any
• Version: 0.0.7