Sorl-thumbnail

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* Fix rST syntax errors from 12.6.0 and 12.6.1 that blocked release. 613
* Improve QA setup and add rST validation to Travis and tox test matrix. 613

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* Deprecate explicit support for Python 3.4 and 3.5 in order to simplify the test matrix 610
* Add requirement for ``setuptools_scm`` to automatically resolve version from git tags 610
* Removed property ``thumbnail.__version__`` 610

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* Add Cropbox feature in Wand/Convert Engine
* Add testing for Django 2.2
* Remove "django.utils.six" to support Django 3.0+
* Remove Python 2 support

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* Make the template tag accept a falsey image
* Update identify (of convert_engine) for faster multi-page PDF thumbnailing
* Fix Redis KVStore timeout
* Fix format conversion in Wand engine
* Added setting THUMBNAIL_REMOVE_URL_ARGS
* Add testing for Django 2.1
* Drop support for Django < 1.11
* Added ssl parameter to Redis object instantiation
* Fix 2 ResourceWarning: unclosed file, in tests
* Fix AdminImageWidget with Django 2.1
* Test in release version of Python 3.7
* Remove unused unittest imports in thumbnail_tests.compat
* Add a __str__ method to ImageFile

project, and includes two years' worth of changes. Thank you to all
contributors. These are some of the highlights:

* Target Django versions are now 1.8, 1.10, 1.11 and 2.0
* Target Python versions are now 2.7, 3.3, 3.4, 3.5 and 3.6
* Enable GIF support (263)
* Enable WebP support (460)
* New ``sorl_thumbnail`` templatetag library that mirrors traditional ``thumbnail``
* Fix bug RGBA mode not compatible with JPEG on PILLOW >=3.7 (503)
* Don't check EXIF orientation with GraphicsMagick
* Bug fix for handling non-ASCII characters in filenames (434)
* Better error detection and handling in some cases (492)
* Improve automated testing
* Improve documentation