Fixed arena not returning to the waiting state if the arena is restarting and all players left.
Fixed out of bounds error for holograms and issues with long messages in messages.yml.
Fixed holograms being removed when two powerups spawn at different times.
Changes:
Instead of powerups being limited, you can now add as many powerups as you want, each with different rarity, duration, hologram, action bar, message, amplifier, material, spawn message, and types. You can also assign any specific powerup types to an arena.
Make sure to remove the types of old powerup in arenas.yml.
Changed /oitc addpowerup to /oitc setpowerup
/oitc addpowerup <arena> <type> - Add a powerup type to an existing arena