http://pan.rebelbase.com/download/releases/0.133/ANNOUNCE.html
   has a full list of changes since the previous release.

   On Windows, Pan requires GTK 2.4.0 or higher, which can be found
   at <http://pan.rebelbase.com/download/extras/gtk_for_windows/>.

   Found a bug?  Have a suggestion?
   Send feedback to pan@rebelbase.com.

   Information on building Pan on Windows can be found in README.mingw.