4.1.1 beta
----------
1. added name method for pl_photos and pl_folders
2. now using acs-permissions: 'admin' privilege is automatically
   granted to all new pl_photos and pl_folders
3. move parameters to ad_parameter.
4. fixed a bug in photo-album-lite-plsql.sql
   which led to erroneous sort_n's in folders with
   deleted photos.
5. pl_photo.prev_photo_id and pl_photo.next_photo_id now take optional 
   party_id and privlege arguments to constuct the correct Next and Back
   links in photo-edit in folders with many photographers.
6. Added photo count and description to folder-view.
7. Added "writable folders created by other users"
   to folder-list?mode=mine. (still need to write UI to support priv. grants)
8. Added default exposure date to pl_folders.  
9. Added default prefix name to pl_folders.
10. Added folder-set-defaults to make bulk changes to photo names
    and exposure dates.
11. Image files and zip archives are now handled by the same target;
    no good reason to expose the user to the difference in backend processing.
12. Added commentability.
13. Replaced pl_deleted_photos with pl_reshuffle_queue.
14. A bunch of changes were made to make sort_n handling a little bit
    cleaner transactionally.
15. Photos can now be moved between folders from the photo-edit page.
16. Added link to original-sized photo when default view is smaller.
17. Use pl_photo_cleanup_filename to regsub out disallowed characters
    from the filename.

4.0.1 final (02/01/01)
----------------------
1. Changed prefixes from pa_ to pl_ to resolve
   conflicts with photo-album package.
2. Added ad-hoc permission checks to photo-add-2.tcl and
   bulk-image-upload-2.tcl.  Only a folder's creator can
   add photos. [ to be replaced with permission system
   calls in the next version ]
3. Added upgrade script for 4.0.1b users.
4. Added cleanup-failed-drop.sql to clean up after
   a failed drop attempt with photo-album-lite-drop.sql.
5. The sort_n's now all start at 1 for each folder, so
   that we can easily display e.g. "Photo 5 of 12".
   Code added to the upgrade script to remap sort_n's.
6. Added "Photo n of m" to photo-view.tcl.

4.0.1 beta (12/31/00)
---------------------
1. added -ping parameter to identify calls, for better performance.
2. fixed a bug in prev/next_photo_id
3. added slideshow (caveat: buggy on slow connections)
4. now using object_id for the initial value of sort_n
5. added sort by exposure date
6. added arbitrary sort order
7. The dbms_job is now dropped by the drop script.
8. Added parameter ImagePreloadingEnabledP so you can turn off preloading
   (useful only for slideshow).
9. Package is subsite aware.
10. Bulk image upload from zip archive added.  Added parameter PathToUnzip.
11. Added sql upgrade script.