• Added ability to use custom identifiers for the slides in the URL, for example: http://example.com/?gid=1&pid=your-custom-gallery-item-uid. More info in FAQ section of docs. (via @csu & @kyleder).
• Added vertical drag range option (verticalDragRange) (via @v-yanchevsky).
• Added ability to control size of PhotoSwipe viewport (it doesn't have to fill 100% width and height of window). More info in FAQ section of docs.
• Fix: partly broken preloader animation when direction:rtl.