The excerpt is ignored in the post type carousel

In carousel-slider/shortcodes/class-carousel-slider-shortcode.php there is the function filter_posts().

The excerpt is being set to:

'excerpt' 	=> wp_trim_words(
	strip_tags($value->post_content), '19', ' ...'
),

Shouldn’t it first look for a manual excerpt, like this?

'excerpt' 	=> $value->post_excerpt != "" ? 
    $value->post_excerpt :
    wp_trim_words(strip_tags($value->post_content), '19', ' ...'),

Thanks for this great plugin!