Raid Bingo

This is a performance and stability release. If you call games in a full raid, this is the one you want.

• No more caller stutter: Callers were getting noticeable frame drops whenever the raid roster changed, someone zoned in, or a ready check went out. The bingo check was re-scanning every player's entire card dozens of times per update. It now checks each card once, and remembers the winning patterns instead of rebuilding them every time.
• Quieter addon chatter: When the caller pings the raid to see who has RaidBingo, everyone used to answer in the same instant. Replies are now spread out and rate-limited, so a 25 or 40-man raid no longer floods the caller at once.
• Smoother caller window: Bursts of updates are combined into a single refresh, and the player and item lists no longer rebuild themselves while the caller window is closed.
• Less startup churn: Hosting features no longer re-initialize every time the raid roster changes.

• Keep paid players between rounds: Building a new game used to silently clear everyone's paid checkbox. If anyone is currently marked as paid, you now get a prompt asking whether to keep those marks or clear them, and players you keep are told they're still paid up.

• Renaming a callout no longer errors: Editing the text on a called item threw a Lua error and left the rename unapplied.