Bounty Map
It has come to my attention that rendering bounty maps is very server-intensive with a lot of bounty boards, so I've made some changes to minimize the lag.

• Added a new config option under bounty-board called staggered-update. This will control how many boards update per update interval.
• Bounty maps are now created asynchronously.

GUI

• Page items will now be replaced with air if there is nothing else to replace them with and replace-items is set to true
• You can now toggle offline players in certain GUIs instead of having to exit the GUI
• Added [offline] as a custom item action. This will toggle offline players in the set-whitelist and set-bounty GUIs. The old action will still work.
• Going to the next page now accurately shows all players