Update changelog for publishing

Author: jonobr1

build/two.js

@@ -766,7 +766,7 @@ var Two = (() => {
       canvas: "CanvasRenderer"
     },
     Version: "v0.8.20",
-    PublishDate: "2025-09-08T17:10:44.915Z",
+    PublishDate: "2025-09-08T17:21:43.659Z",
     Identifier: "two-",
     Resolution: 12,
     AutoCalculateImportedMatrices: true,
@@ -1437,7 +1437,9 @@ var Two = (() => {
       if (element.renderer && typeof element.renderer.type === "string") {
         this.renderer.type = element.renderer.type;
       }
-      this.className = element.className || "";
+      if (typeof element.className === "string") {
+        this.className = element.className;
+      }
       return this;
     }
     toObject() {

build/two.min.js

@@ -782,7 +782,7 @@ var Constants = {
     canvas: "CanvasRenderer"
   },
   Version: "v0.8.20",
-  PublishDate: "2025-09-08T17:10:44.915Z",
+  PublishDate: "2025-09-08T17:21:43.659Z",
   Identifier: "two-",
   Resolution: 12,
   AutoCalculateImportedMatrices: true,
@@ -1455,7 +1455,9 @@ var _Element = class extends Events {
     if (element.renderer && typeof element.renderer.type === "string") {
       this.renderer.type = element.renderer.type;
     }
-    this.className = element.className || "";
+    if (typeof element.className === "string") {
+      this.className = element.className;
+    }
     return this;
   }
   toObject() {

build/two.module.js

@@ -11,8 +11,11 @@ All notable changes to this project will be documented in this file. The format
 
 <carbon-ads />
 
-## Nightly
+## September 8, 2025 v0.8.20
 
+<h3 class="visible">Sep 8, 2025</h3><version-link v="v0.8.20" />
+
+- Fixed `Two.Element.copy` to fail gracefully
 - Added `Two.Image` as a new shape that inherits `Two.Rectangle`
 - Expand `Two.RoundedRectangle` constructor to accept `Two.Vector` as the radius
 - Added `Two.Element.dispose`, `Two.Path.dispose`, `Two.Group.dispose`, `Two.Text.dispose`, `Two.Points.dispose`, `Two.ImageSequence.dispose`, `Two.Sprite.dispose`