+ Added filter menu slot customization, you can use ranges or specific slots. Example slots: 1-5 or slots: 1,2,4,7 or you can just provide a single slot
+ Updated NBT-API
+ Items/Transactions are now loaded then saved during start-up.
+ Added some missing null checks
+ Added a listing fee info the bin/auction sell menus to let the player know how much it will cost to list the item if that feature is enabled.
- Sorry for lack of updates been very busy with work.