Merge pull request #2 from oversize/master

Dont force user to have COMPRESS_IMAGES enabled in settings
Merge pull request #1 from ScholzVolkmer/master

upstream changes
changed trimage to picopt
Merge remote-tracking branch 'origin/master'
removed picopt from requirements because the pip version does have bugs
Merge pull request #3 from kinkerl/master

picopt change
Catch Exception and print to error log.

Instead of polluting log with full traceback.