Add Contributor list

Fix Luohuayu#588

Fix java.lang.NoSuchMethodError: org.yaml.snakeyaml.LoaderOptions.set…

…MaxAliasesForCollections(I)V

Fix getMinecraftWorld method and add world check

移除强转

兼容SuperiorSkyblock2插件

增加线程池异常记录到Watchdog日志

增加vanilla.preventPistonPushTileEntity选项 (Fixed Luohuayu#523)

Fixed Luohuayu#485

Ignore ClientWorld