ShowItem 1.5.5 - Item blocker and filterer improvements
Block items if they are in shulker boxes/chests too
Fix items being blocked that had no special tags if certain tags were tried to match
Fix a potential issue with how skulls were being filtered
Fix placeholder error in default inventory show message to the one who shows it (new lang.inv.player.self: "You show %target%&a your inventory. (Click)", old used %player% which is the player who executes the command)