rename Nomo to Starman, while respecting the CPANism to prefix
HTTP::Server::* People would just call this Starman anyway.
Remove the janky hack of using Plack::Request to buffer request body.
Instead preload in any case for the whole body, whether it's chunked
or not. Save the buffer into experimental psgix.input.buffered as
well. Implemente dechunk logic without using the deprecated Dechunk