Gravestone 1.0.2

• Fixed item loss when only part of a stack fits during grave recovery.
• Full inventories now leave remaining items safely inside the gravestone instead of dropping them.
• Gravestones can no longer be used as private storage or emptied with hoppers.
• A gravestone containing items can no longer be broken when the owner's inventory has no room.
• Gravestones can no longer be moved by pistons.