Share benchmark code
I see benchmark numbers in the readme but the code isn't in the repo. Could you share the code so I can reproduce those on my machine? Really what I am wondering is how the comparison changes if I do have an io::Write that I need to write to, as is the case in serde_json. With numtoa I would have to copy the bytes from my buffer over to the io::Write which I imagine would cut into the 8% advantage.