Also, this ports the entire Windows API to Lua, so it's not limited to just the convenience APIs.
The website is not good at explaining this, I admit. I'll work on the website and then resubmit this at a later date.
And yes, it's paid, but I spent about a thousand hours making it, and I think it's fair to be compensated for that somehow. Maybe after enough licenses are sold to pay for my time, I will open source it.