I think I figured it out. Someone with moderator rights must have read the summary, not read the documentation in detail, and decided that I had only implement

I think I figured it out. Someone with moderator rights must have read the summary, not read the documentation in detail, and decided that I had only implemented regular old promises/futures and was calling this "time travel". They probably missed the point of promise pipelining -- which is something that no mainstream RPC system implements to my knowledge, only research systems like CapTP. So they demoted it for making what they assumed to be a ridiculous claim about a mundane piece of software. Sigh.