Use newer functions from MT/MTG 5.0.0+

These commits create more compatibility with MT/MTG 5.0.0+.
However, these commits (may) break compatibility with the 0.4-series.

3d_armor_stand/init.lua

@@ -97,7 +97,7 @@ local function update_entity(pos)
 				yaw = math.pi / 2
 			end
 		end
-		object:setyaw(yaw)
+		object:set_yaw(yaw)
 		object:set_properties({textures={texture}})
 	end
 end