Make elements default constructible, testing wip

js/element/ColorSliderElement.js

@@ -1,12 +1,19 @@
 import ColorSliderTemplate from "../template/ColorSliderTemplate"
 import IDraggableControlElement from "./IDraggableControlElement"
 
-/** @typedef {import("../template/IDraggableControlTemplate").default} IDraggableControlTemplate */
-
 /** @extends {IDraggableControlElement<Object, ColorSliderTemplate>} */
 export default class ColorSliderElement extends IDraggableControlElement {
 
     constructor() {
-        super({}, new ColorSliderTemplate())
+        super()
+        super.initialize({}, new ColorSliderTemplate())
+    }
+
+    static newObject() {
+        return new ColorSliderElement()
+    }
+
+    initialize() {
+        // Initialized in the constructor, this method does nothing
     }
 }