code: function _updateAllElements({ updateCache } = {}) {
          elements.forEach(element => {
              _updateElementPosition(element);
              if (updateCache) {
                  element.setCachedAttributes(view, scroll);
              }
          });
          // reset ticking so more animations can be called
          ticking = false;
      }
docs: Update element positions.
  Determines if the element is in view based on the cached
  attributes, if so set the elements parallax styles.