Bukkit

• Updated for 1.3.1-R2.0
• Fixed /stop error
• Fixed two people opening shelf bugs the item blocker (Anything could be put in the shelves)
• You can now create shelves that give out unlimited copies of books.
• New commands: /bs (teehee) and /bookshelf - They both set a bookshelf you are looking at to never run out of books.
• New permissions: bookshelf.* and bookshelf.bs - bookshelf.* gives bookshelf.bs, which is needed to use /bs or /bookshelf. Default op.
• When players drop books while using a bookshelf that gives unlimited copies, the books are put back in the player's inventory.
• Books put into shelves that give unlimited copies will not overwrite the originals.

When a bookshelf is pushed by a piston, the books remain in the original location, creating ghost data. I am working on a fix.