The repair-delay node is now unused! The reason for this is that it is now possible (with the release of 1317) to cancel block damage in explosions, and still retain the animation and sound! This also means that arenas should be fully pistons-compatible (for arenas that don't use soft-restore or force-restore)! I'm hoping to see some screenshots and videos of shifting arenas! :)
You can now right-click signs in the lobby! I finally found a super easy solution to the improperly updating inventory issue with right-clicking class signs. The result is that players can now left- or right-click as they please. This should solve all issues related to players not being able to choose classes, due to spawn region and WorldGuard/Factions/whatever conflicts.
It is no longer possible to warp out of the lobby.
New per-arena setting: final-wave - Allows for setting a final wave, meaning on that wave, the arena will end, regardless of how many players are alive.