FancyApp Carousel plugin Sync expect a hardcode classname

Description Carousel__slide uses the hardcode of slide classes at the same time, providing classNames: {}, but the content of 'slide' is ignored unless equal to .carousel__slide.

A demo is available here: https://codepen.io/Axeofblood/pen/oNyXZBa If the thumbnail item doesn't have the .carousel__slide class, the click event will be ignored in Sync

To Reproduce Steps to reproduce the behavior:

1. Create Carousel
2. Change class for slides
3. Try click on thumbnails
4. See

Expected behavior Changing the class has no effect on click behavior