Trying to stay compatible with Drupal HEAD going into the 7.x release now that #373613: Create "Image" Objects, Operate on Images By Resource has been committed. The code extends core's toolkits to provide an unsharpen mask function and to provide an ImageMagick toolkit.
Fix some crop scaling issues introduced with crop transparency support.
Add transparency preservation on crop.
autoscale width/height if either is 0 according to aspect ratio.
remove defunct imagick toolkit.
This is the initial beta release if ImageAPI. Only the ImageAPI GD toolkit works currently. ImageAPI Imagick needs love. Everything seems to work properly with ImageAPI GD, the Desaturate function can time out. I wouldn't use it on large images.