[lukaslalinsky]

My work was kind of similar to the `std.Io` plans, so when I learned about it, I started aligning the project to that interface. Now it's a full fledged implementation of the interface. It's actually the first async implementation of the interface, the one in stdlib is very far from finished.

There are many shortcomings in the API, especially missing timeouts everywhere. It was clearly designed by people working on the compiler and other local tools, and not much network services, but I think it's a great improvement in the Zig ecosystem and hopefully people can now write reusable libraries.