ImageIO Format PFM: fwrite one line at a time (based on series of performance measurements)
Collect images: allow collecting by geotagging (is coordinates set)
zonesystem: make the preview more consistent; should fix #9916
Merge branch 'master' of ssh://github.com/darktable-org/darktable
Free memory allocated by dt_alloc_align() using dt_free_align(), not free()
Merge pull request #526 from LebedevRI/pfm-speed

PFM: change write algo
usermanual: start work on version 1.5
Merge pull request #537 from LebedevRI/colollect-geotagging

Collect images: allow collecting by geotagging