Show HN: Filesystem Watcher

An arbitrary filesystem event watcher which is:

- simple

- efficient

- dependency free

- runnable anywhere with a filesystem

- header only

Watcher is extremely efficient. In most cases, even when scanning millions of paths, this library uses a near-zero amount of resources.

Watcher is simple. The library exposes a single function and a single object. That is all.

Happy hacking.