• New feature - trigger elements; it is now possible to have multiple links having the same target, see the last example here - https://codepen.io/fancyapps/pen/VyLOJX?editors=1000
• Default toolbar buttons are now zoom/thumbs/close to make interface cleaner;
• Improved video (mp4) support - you can now link directly or display hidden <video> element;
• Videos (mp4 and YouTube/Vimeo, too) now keep aspect ratio;
• All icons are now created using SVG and navigation arrows have a simpler structure to make them easier to style;
• createGroup method used to create the group is renamed to addContent and now can be used to populate the group;
• Removed margin option; use padding for .fancybox-slide element instead;
• Caption now uses one div element (dropped fancybox-caption-wrap element) and pseudo element for the background gradient;
• Dropped support for MetaCafe, Dailymotion and Vine
• The code is now standartized and formatted using prettier.io
• Bugfixes