Changes

1.5

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.

1.4

Considerable speed up for remote storages by reducing queries. Brent O'Connor spent a lot of time debugging this, so thank you epicserve!
Allow the {% thumbnail %} tag to also accept aliases. Thanks Simon Meers!
Make replace_alpha actually work correctly.
Fixes exception being raised when image exists in cache but is doesn't actually exist in the storage.
Fixes Python 2.5 compatibility.

1.3

Some more Django 1.5 fixes.
Fix an issue with Thumbnail.url not working correctly.
Add the ability to generate retina quality thumbnails in addition to the standard ones (off by default).

1.2

Django 1.5 compatibility.
Fixed a problem with the ImageClearableFileInput widget.

1.1

Added a way to avoid generating thumbnails if they don't exist already (with a signal to deal with them elsewhere).
Added a thumbnailer_passive filter to allow templates to use the non-generating thumbnails functionality when dealing with aliases.

1.0.3

Changed the exception to catch from 1.0.2 to IOError.

1.0.2

Catch an OSError exception when trying to get the EXIF data of a touchy image.

1.0.1

Fix a Django 1.2 backwards incompatibility in easy_thumbnails.conf
Introduced a thumbnail_created signal.

1.0

Introduction of aliased thumbnails.
Start of sane versioning numbers.