BetterBags - ItemRack

Attention If you used the previous version it could be a good idea to go into the BetterBags-Settings -> Custom Categories and remove the previously used category "Sets". In future versions this will no longer be needed but for now it was the best way of migrating I think. Don't want to potentially break categories that other people may have named like this.

Changelog

• Items are now grouped in categories specific to their ItemRack Set. Sets that overlap will make up a joined category
• Added ItemRack as dependency ingame
• Custom categories are now stored persistently in preparation for future updates
• Updated categories will now instantly refresh in bag