* New ``Alias`` namer.
* Avoid a potential concurrency issue with creating the cache.
* Fix incorrect use of select_related for source thumbnail model.
* Removed some vestigal processor arguments.
* Allow ``HIGH_RESOLUTION`` argument on thumbnail template tag.
* Add logic to correctly handle thumbnail images on deferred models (e.g. when using ``.only()``).
* Add a ``data_uri`` filter to allow rendering of an image inline as a data uri.
* Better support for multiple source generators.
* Update method used to check for modification dates of source and thumbnail
images. Thanks Ben Roberts.
* Better thumbnail_high_resolution handling, including the ability to switch on
and off explicitly with a ``HIGH_RESOLUTION`` thumbnail option.
* Added configuration option to specify the infix used for high resolution
image handling.
* Optional postprocessor for image optimization. Thanks Jacob Rief!
* More remote storages optimization
* Thumbnail dimensions can now optionally be cached. Thanks David Novakovic.
* New ``zoom`` option to generate a thumbnail of a source image with a
percentage clipped off each side.
* New ``background`` source processor that can add a border color to ensure
scaled images fit within the exact dimensions given.
based on a source image. So whenever a thumbnail does not exist or if the
source was modified more recently than the existing thumbnail, a new thumbnail
is generated (and saved).
