publish to crates.io

[oli-obk]

I was just asked about UI libraries for rust. My suggestion of KISS-UI got met with the complaint that it's not on crates.

it would probably be a good idea to also add keywords like "ui" and "gui"

[abonander]

The primary concern is people not having IUP installed and thus complaining when their crate fails to link. I was also in the middle of a documentation refactoring that I haven't finished yet