New version 2.12.6 released.

Changelog

• Added: dView can use Recoil image library to read over 500 image formats of the 20th century;
• Added: integrated pdf viewer;
• Added: new option in the settings dialog to filter the files when loading a new image with previous/next command;
• Changed: third-party libraries to the latest compatible version;
• Changed: minor UI updates;
• Fixed: palette manager always enabled even for non-palettized images;
• Fixed: copy/paste always enabled even when the image is not available/valid.