ith data-src will be loaded only when visible
        preloadIframes: {{ preload_iframes }},
        // Can be used to globally disable auto-animation
        autoAnimate: {{ auto_animate }},
        // Optionally provide a custom element matcher that will be
        // used to dictate which elements we can animate between.
        autoAnimateMatcher: {{ auto_animate_matcher }},
        // Default settings for our auto-animate transitions, can be
        // overridden per-slide or per-element via data argum