resetItems() {
    // Remove refs to current items.
    this._disposeItems(this.items);
    this.isInitialized = false;

    // Find new items in the DOM.
    this.items = this._getItems();

    // Set initial styles on the new items.
    this._initItems(this.items);

    this.once(Shuffle.EventType.LAYOUT, () => {
      // Add transition to each item.
      this.setItemTransitions(this.items);
      this.isInitialized = true;
    });

    // Lay out all items.
    this.filter(this.lastFilter);
  }
Dump the elements currently stored and reinitialize all child elements which
match the `itemSelector`.