Minecraft wiki entry for Development_versions, associated text: The Darkness effect is now required for the "How Did We Get Here" advancement.
The parent advancement of the "With our powers combined!" advancement is changed from "Bukkit bukkit" to "When the Squad Hops into Town".
The ID of the "Birthday Song" advancement is changed from allay_deliver_cake_to_noteblock to allay_deliver_cake_to_note_block.
Removed item_delivered_to_player advancement trigger.