Crate opening and management is more straightforward in the plugin, and the config is not as ugly, plus some other changes/additions:

• Custom potions
• Technically better performance on server while opening crate
• bStats metrics is now used
• NEW CONFIG FORMAT
• 'Crates' and 'items' loot are no longer separate in config, are all now considered 'loot' for simplicity, with inbuilt modifiers

For backwards compatibility, the old config format still works for those who have used my plugin before this update. Changes now and onward will only apply to the new config format.