Fixed a problem with SignShop saving on a separate thread
Added a boolean to allow or disallow breaking of shops with redstone in your hands and in creative (enabled by default)
Added optional parameter {clearArmor} to takePlayerInventory so Class signs can now modify player armor as well as inventories (you will need to add this manually if you'd like this feature, check the QuickReference if you need help)
Using SignShops that take or remove items from your inventory, with a written book in your inventory as well, will delete the contents of the book. There is no nice way for plugins to store the information written in books for 1.3 yet, so we cannot fix it until the Bukkit team updates their API.