<limit>
is defined by the server/bouncer by default, but the client can optionally ask for a different limit.
CHATHISTORY #ircv3 BEFORE id=ytNBbt565yt4r3err3 [<limit>]
- get up to <limit> number of messages before the given id/time
CHATHISTORY #ircv3 AFTER id=ytNBbt565yt4r3err3 [<limit>]
- get up to <limit> number of messages after the given id/time
CHATHISTORY #ircv3 LATEST id=ytNBbt565yt4r3err3 [<limit>]
- get the most recent (up to `<limit>`) messages that have been sent since the given id/time
- if * is given instead of a specific ID, just the most recent messages with no limit
CHATHISTORY #ircv3 AROUND id=ytNBbt565yt4r3err3 []