add thumbnail entropy cropping and border removal
version bump
Don't crop if upscale is disabled and image is smaller than requested

This is useful because if the original image is smaller than the
requested one it is more handy to give size to the image container
with css instead of having another image. And with an horrible
background.

Since this is a change in behaviour so maybe a new setting is due.
Don't call LazyObject._setup() unconditionally; can be destructive.
Merge pull request #227 from carljm/safe-serialize-storage

Don't call LazyObject._setup() unconditionally; can be destructive.
Notice for developers
Django 1.4 compatibility. related #228
Include tests Django 1.4.10 (LTS version) rel #228
Fix travis-ci matrix
Fix travis-ci matrix indentation
Update features summary [skip ci]
Fix for cleanup command doesn't actually clean thumbnails #130
Merge branch 'master' of github.com:mariocesar/sorl-thumbnail

* 'master' of github.com:mariocesar/sorl-thumbnail:
  Update features summary [skip ci]
Handle when you get and empty string from the keystore when serializing. Rel #168
Make sure future upgrade of django will be used. Enable wheels again
Fix using wheel
Duh! If wheel variable is set install wheel package
Wheel package for PyYAML to speed up the tests
Fix bash syntax
Do nothing operator