2.0.0 - 1.21.1

• name can now be left blank to default to the Item's original name.
• action under a menu item can now be left blank, and it will default to the noop action.
• craft_items action, now has an additional field hide_text which hides the built-in crafting lore text (Inputs, Outputs text). Defaults to false
• If no filler item is set, then an empty item stack is placed as filler (basically disabling the slots with emptiness)
• background can now be set to show a custom background texture, with support for setting menu title location and hiding player inventory.

For breaking changes from 1.x to 2.0: Check out the migrations guide