Doesn't support non-blockin File IO on Linux

In addition to not supporting Windows yet #16, this create is implemented using unix sockets set to non-blocking. This does, however, not make reads to files non-blocking on linux.

I think you would need to use `io-uring` or `aio` to accomplish that. If async file opening is to be supported, I beleive `io-uring` has to be used

This crate seems fairly incomplete, but the API seems nice

Start by reviewing the crate's existing non-blocking Unix socket implementation and how it handles Linux file reads. Compare the requirements of io-uring and aio for non-blocking file reads and opening; done would mean Linux file I/O is supported without blocking.

Written by the indexing model from the issue text.