Simple Shulker Preview

Finally, the 1.21.5 update! Apologies for the delay, my PC blew up on me.

Changes:

• Potion types are now distinct from each other, so item quantity and position filters will now work with them properly
• The counting of items is now fixed, which means the capacity bar is working properly for items that stack to less than 64
• Coloured bundles are now supported

The config UI rewrite is still in the works, but will have to wait for a future update still :) I'll try to backport all bugfixes to older versions of MC when that update becomes available.