nanogallery2 v1.5.0

• new: swipe down to close lightbox
• new: thumbnail image dominant color in stacks
• new: thumbnail gradient color during image download (see galleryTheme)
• new: lightbox option 'viewerImageDisplay'
  Possible values : 'upscale' to upscale images to fullscreen, 'bestImageQuality' for highest quality on high DPI screens like retina
• new: define multiple thumbnails per item (url and size) - API and markup content source
• enhanced: lightbox image zoom and swipe
• removed: open image in Google Photos (broken since changes by Google)
• fixed: #51 - thumbnail to navigate up not displayed correctly
• fixed: Flickr incorrect image resolution
• fixed: thumbnail to navigate up displayed even without parent album
• fixed: option 'photoset' not a real alias of 'album'
• fixed: sorting for images/albums defined with HTML markup or javascript
• fixed: package manager compatibility
• fixed: incorrect cursor pointer when lightbox disabled
• fixed: endless loop if image/gallery in location hash does not exit (markup or javascript content)
• fixed: internal lightbox started although third party lightbox defined
• misc performance enhancements and bugfixes