Build #27 (Dec 4, 2017 1:01:27 AM)

1. cr2hdr: experiment - yet another exposure matching algorithm
   flicker-free on these samples: http://www.magiclantern.fm/forum/index.php?topic=7139.msg193913#msg193913
   to be tested (detail / bitbucket)
2. cr2hdr: option to process non-dualiso files (--force) (detail / bitbucket)
3. cr2hdr: fix edge-map (debug) (detail / bitbucket)
4. cr2hdr: fine-tuned black level autodetection (detail / bitbucket)
5. cr2hdr: small fixes for black level autodetection (detail / bitbucket)
6. cr2hdr: experiment - autodetect black level by analyzing the dark areas of the image (detail / bitbucket)
7. cr2hdr: fix units when printing black adjustment after ISO matching (detail / bitbucket)
8. cr2hdr: skip invalid dynamic range estimations for files without OB areas (detail / bitbucket)
9. cr2hdr: read black level from EXIF if the image doesn't have OB areas (detail / bitbucket)
10. cr2hdr: fix black delta correction (no more guesswork) (detail / bitbucket)

Started by user Alex