Numenor

Hi, and thanks to the developers for this amazing and useful project. I'm currently in the process of digitalizing a huge number of paper photos into JPG files; each photo has its own size, of course. Luckily, the native UI of my scanner has an auto-crop feature, but it requires to make a 300dpi color preview scan for each scan, so this basically doubles the time needed for each photo. Now that a deskew option has been added to NASP2, it would be nice to have it completed with an auto-crop featu...