Turbo is a framework built for LuaJIT 2 to simplify the task of building fast and scalable network applications. It uses a event-driven, non-blocking, no thread design to deliver excellent performance and minimal footprint to high-load applications while also providing excellent support for embedded uses.
I'd be happy to accept this, the only thing is that this new attribute should be documented. The proper place would be below this line:
https://github.com/kernelsauce/turbo/blame/master/doc/async.rst#L143