Extensions for Read
& Write
traits from standard library to make work with primitive types easier.
```rust fn main() { use io_ext::ReadExt;
let data = b"\x00\x02\x03\x00";
let mut slice = &data[..];
assert_eq!(slice.read_u16_be(), 2);
assert_eq!(slice.read_u16_le(), 3);
} ```