Log Message:
update to 2.3.4
changes:
* Special support for JPEG images on save (preserves EXIF data,
* Function for saving modified images in a collection.
* Collection thumbnail creation/update fixes.
* Translation Updates
* Collection view supports zoom interface
* Recent files support
* Collection view shows the selected image in the top
  half of the window
* Support for thumbnail management spec
* Sticky zoom to fit (if you resize the window the image zoom will be
  adapted automatically)
* Progressive image loading for remote or large files
* EXIF support in collection view (requires optional libexif)
+bugfixes