State of HTTP Servers in Nim

[termer]

I'm sure they get could a performance boost from it. When I was working on 
httpx, I noticed that in Valgrind it was reporting that a header parsing proc 
was the slowest of any. That tends to be the biggest pain point for performance 
in Nim, string handling. I think a lot could be done to improve the performance 
of parsing in most Nim HTTP servers.