Don't announce the milestone for beginning a game.

(Milestone will be created once all server bots have it muted.)
Don't announce any Sprint/ZotDef events other than wins.
Don't announce reaching the end of Lair or Orc, do announce entering Hive.
Update the list of unannounced uniques.

(Snorg doesn't generate in D/Lair quite yet, but he will...)
Require 1000 points or 3000 turns to announce a death (used to be 2000, 500).