lightweight library for fast parsing of Linux /proc/[pid]/maps files
```rust
let contents = fs::read_to_string("/proc/pid/maps").unwrap();
let maps = MapsIter::new(&contents).collect::<Vec<_>>();
// ...
```
Generic version extracted from [meow](https://github.com/kekeimiku/Meow/blob/1488c54c2e85cd84b870a08deb1f2bb02b8edd93/src/os/linux.rs#L68)