Stackable Shulker Boxes (Data Pack for 1.20.5 - 26.2)

A data pack for Minecraft 1.20.5 - 26.2 which makes empty shulker boxes stack up to 64 per slot.

This pack modifies the recipe and loot tables for shulker boxes to make their `max_stack_size` component 64 (if it is empty). It also checks your inventory for shulker boxes that are empty but still have a `max_stack_size` of 1, and modifies them accordingly so if you grab shulker boxes from creative mode or a command, or you enable this in an existing world, the items will be updated once in your inventory.

This pack supports Smithed's Weld feature to merge the pack with others, and uses the standard modified form of the standard yellow shulker box loot to maintain compatibility with other packs which use that technique.