Made items fully customizable in the customization.yml file.
Renamed in-game-items to items in the customization.yml file.
Some more organization of protection listeners.
Keep in mind that you have to reset your customization.yml file if you don't want to have broken items! You can also adjust it manually, this is the new default section: #Formatting: 'ITEM:DISPLAYNAME:LORE' items: join: "DIAMOND_AXE:&bJoin:&bJoin an arena!" leave: "BARRIER:&cLeave:&cLeave the arena." radar: "COMPASS:&8Radar:&8Find your enemies!"
Spigot doesn't have really great codeblocks so you won't see the spaces, but before the item's name should be 2 spaces!