This change is breaking. Markov chain data is moved into an entirely separate logical database and some keys were changed. There is no migration routine for this change, so a fresh Redis database should be used by this point.
When mentioned in a server thread channel, the parent channel's Markov chain is used to generate responses. This avoids low quality sentences which would occur if every server thread channel was given a brand new Markov chain.
Messages received from server thread channels do not get ingested.
