The goal is definitely not to replace NGINX or Apache or the like. I don't see handling TLS ever being a goal of this project, same with HTTP2 support. Although allowing the user to plug something in to handle HTTPS may not be out of the question.
Then I'd actually consider renaming your project to better transport your target scope. What you have in mind more sounds like a minimal library for writing non blocking REST APIs or HTTP based handlers, and not (full featured, as usually expected) HTTP servers. I really like it, though.