Merge pull request #342 from uraid/fix-thumbnail-generating

Fix crashes in thumbnails generation

Merge branch 'new-ui'

Merge branch 'master' into 256-fix-next-previous-photo

Merge pull request #334 from uraid/master

Fix face and object recognition of rotated images

Test case for invalid UTF-8 metadata

Fixes tests

Merge pull request #304 from Red-F/fix-identical-subject-resilience

never crash when images contain identical subject tags (type Generic)

Tidy-ups to progress bar display

Fix for face recognition on ARM

Pins exact version of opencv-python to fix CI build for ARMv7