Added 26 structures:
circle_blackstone circle_nether_brick grave_yard large_blackstone_pillars large_blackstone_walls large_nether_brick lava_pool medium_blackstone medium_crimson_fungus medium_crimson_fungus_2 medium_crimson_well medium_house medium_house_2 medium_warped_fungus medium_warped_fungus_2 medium_warped_well small_nether_brick smoking_shrine very_small_blackstone very_small_blackstone_2 very_small_blackstone_3 very_small_blackstone_4 very_small_nether_brick very_small_nether_brick_2 very_small_nether_brick_3. warped_pool