Use new 'requiredProperties' option

src/index.js

@@ -3,12 +3,11 @@
 const canvassed = require("canvassed");
 
 module.exports = function createRectangle(options = {}) {
-	canvassed.requireProperties(options, ["width", "height"]);
-
 	let rectangle = canvassed.createObject(Object.assign({
 		type: "rectangle",
 		cacheBustingProperties: ["fillColor", "strokeColor", "strokeWidth"],
 		sizeBustingProperties: ["width", "height"],
+		requiredProperties: ["width", "height"],
 		fillColor: "black",
 		strokeColor: "red",
 		strokeWidth: 0,