MC Squared

-Made square: Backyard, Burning Skull, Fern, Pond, Skull and Roses, Wanderer, Wind, and Wither Paintings, and off-Map player Map decorations, Poplar Sapling and GUI Boats, and Shelf Mushrooms.
-Made more square: Cookie, Fire Charge, Humble and Skeleton Paintings, and Raw Iron.
-Made square again: Beds.
-Made more accurate to vanilla: GUI Boats with Chest and moon phases.