message: refactor(core): Refactor IterableDiffers#create method
  Remove unneeded else clause to show that `new IterableDiffers(factories);` is returned by default.
  PR Close
diff: @@ -144,10 +144,9 @@ export class IterableDiffers {
  if (parent != null) {
  const copied = parent.factories.slice();
  factories = factories.concat(copied);
  - return new IterableDiffers(factories);
  - } else {
  - return new IterableDiffers(factories);
  }
  +
  + return new IterableDiffers(factories);
  }
  /**
  