Mercury 56.0.0

* Switched to newer form of CSS rgb specification.
* Better cleanup of unused files for Google maps.
* Processing sequence changed.

* This version takes a different approach to solving the compromises necessary to produce a justified gallery of non-fixed shape thumbnails. It now sets the target row height equal to the thumbnail image bounds height, sets a maximum row height 20% higher than that, and avoids out-of-focus thumbnails by using HiDPI thumbnail images. The default thumbnail image bounds have been reduced, to compensate for these changes. But an existing album that was not using fixed shape thumbnails will now display the thumbnails considerably larger unless the image bounds are reduced by one-quarter to one-third. If your project had 360x240 thumbnails, and it does not use fixed shape thumbnails, resetting the bounds to 270x180 will approximate the layout of the existing album. These changes will involve at least one reprocessing of all the images in an existing project, unfortunately.
* When choosing fixed shape thumbnails, you now have the option of displaying the thumbnail caption (if any) superimposed on the thumbnail image, or below it.
* Floated thumbnails are now always shown with a colored thumbnail surround. If you insist upon eliminating this (which produces a terrible-looking page), you can choose the Custom style and set the surround color to match the body
* More selective CSS generation.

* Revised custom cursors for previous/next hover on slide images, for both fat and thin icon styles.
* UI compiled to Java 8, for the sake of users stuck with the 32-bit version of Windows 7.
* This is the last version that is compatible with jAlbum 22/24.0.

* Option to use a thin icon set.
* CSS improvements.
* Reorganized UI panels.
* Some changes for cross-skin variable naming consistency.

* Some changes in the Dark and Light style colors.
* This is the last version that is compatible with jAlbum 17/21.

* This is the last version that is compatible with jAlbum 15/16.