- Fixed an issue with sacks sometimes bypassing the blacklist and whitelist when adding items into them
- Fixed an issue with the MTBackpackAPI#willFit method in the API sometimes returning false when the items could have fit in both the backpack and the inventory
- Created MTBackpackAPI#willFitWithoutInventory to check if you can place the given items exclusively within the backpacks and/or sacks
- Heavily improved when and how sacks get re-rendered in order to improve performance. This should also fix any visual discrepancies in how sacks behave when other plugin hook into MTBackpack