Brianna Changelog: October 27, 2019
Fixed an issue with /island top not showing the appropriate island level
Changed getRandomLocation method of LocationUtil.java to use world#getChunkAt instead of chunk#load since it's not documented whether the chunk stays loaded forever or only temporarily upon invoking that method
Refactored the onDisable method in VisitManager.java
Optimized UpgradeManager.java by removing a useless Map#containsKey check
Optimized and fixed a bug in IslandLevel.java
Optimized island deletion by introducing a queue system.
Reduced array resizing in the following classes: LeaderboardManager.java, MessageManager.java, PlaceholderManager.java
Changed the Tick class (inner class of Portal.java) to a static nested class
Removed unneeded cloning of locations in Respawn.java
Removed useless ArrayList creation in Generator.java
EZPlaceholder.java is no longer uselessly treated as a listener.