added some additional exceptions to the PIL engine to catch exceptions thrown by the EXIF reader
Resize ImageFile.MAXBLOCK for progressive jpegs
small change to pil backend
Merge branch 'master' of https://github.com/Architizer/sorl-thumbnail
small change to pil backend
Add force_create kwargs to get_thumbnail

    *   When force_create=False get_thumbnail will return the source
        image if no thumbnail is found in the cache
moved a return statement around
changed order of return statement to hopefully make everything a bit faster
Fixed sentry event https://app.getsentry.com/architizercom/production/group/15176662/
Fixed error: https://app.getsentry.com/architizercom/production/group/15177340/
Merge branch 'master' into origin/master

Conflicts:
	sorl/thumbnail/base.py
	sorl/thumbnail/engines/base.py
	sorl/thumbnail/engines/pil_engine.py