message: feat: copy pretty-printed JSON
  closes
diff: @@ -27,7 +27,7 @@ export class CopyButton implements OnInit {
  onClick() {
  let copied;
  if (this.copyText) {
  - copied = Clipboard.copyCustom(JSON.stringify(this.copyText));
  + copied = Clipboard.copyCustom(JSON.stringify(this.copyText, null, 2));
  } else {
  copied = Clipboard.copyElement(this.copyElement);
  }
  