1.2.0
- Made generated img tags XHTML compliant (Jan-Wijbrand Kolman).
- Reenabled undo functionality.
- Added upgrade instructions; see UPGRADE-1.2.0.txt.

1.2.0b2
- Included Oliver Bleutgen's patch that allows to perform a redirect 
  if the default view is triggered unintentionally.
- Documented the IExtFile and IExtImage interfaces.
- More tests.

1.2.0b1
- Support for large files by eliminating StringIO.
- Support for INSTANCE_HOME and PUT_factory.
- Support for serving ExtImages statically via Apache (or another webserver).
- New repository management options.
- Automatic file extension management.  
- Configuration settings moved to a separate file, Config.py.
- Switched to new-style security declarations throughout.
- Some API polishing.
- Reworked upload code and added manage_upload() API method.
- Ran everything through expand -4.
- Added some tests.

