Bukkit

• Updated for MC 1.13. Older versions are no longer supported from this update on (only marked as 1.12 compatible because there is no tag for 1.13 yet).
• Slightly improved the logic for returning the sign item:
  • It now returns a sign item similar to the one used (including the sign
    item's meta data).
  • It now tries to return the item to the correct hand (if the item was
    placed from the off hand). If the hand is full or contains a different
    item by now, it tries to add the item to the inventory. If the inventory
    cannot hold the item, it drops the item.

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