* Added python-magic for smarter MIME type detection (https://github.com/ahupp/python-magic).
* Added a new Document model field: file_mime_encoding.
* Show only document metadata in document list view.
* If one document type exists, the create document wizard skips the first step.
* Changed to a liquid css grid
* Added the ability to group documents by their metadata
* New abstracted options to adjust document conversion quality (default, low, high)
* Added permissions and roles support
* Added multipage documents support (only tested on pdfs)
    To update a previous database do: [d.update_page_count() for d in Document.objects.all()]
* Added support for document page transformation (no GUI yet)
* Added views to create, edit and grant/revoke permissions to roles
* Apply default transformations to document before OCR
* Added unpaper to the OCR convertion pipe
* Added support for concurrent, queued OCR processing using celery
* Added sentry to monitor and store error for later debugging
* Zip files can now be uncompressed in memory and their content uploaded individually in one step

2011-Feb 21
* Added per document duplicate search and a tools menu option to seach all duplicated documents
* Added document tool that deletes and re-creates all documents filesystem links
* Increased document's and document metadata index filename field's size to 255 characters

2011-Feb 26
* Added document description to the field search list
* Sort OCR queued documents according to submitted date & time
* Document filesystem serving is now a separate app
    - Step to update:
        1) rename the following settings:
            DOCUMENTS_FILESYSTEM_FILESERVING_ENABLE
            DOCUMENTS_FILESYSTEM_FILESERVING_PATH
            DOCUMENTS_FILESYSTEM_SLUGIFY_PATHS
            DOCUMENTS_FILESYSTEM_MAX_RENAME_COUNT
        to:    
            FILESYSTEM_FILESERVING_ENABLE
            FILESYSTEM_FILESERVING_PATH
            FILESYSTEM_SLUGIFY_PATHS
            FILESYSTEM_MAX_RENAME_COUNT
        
        2) Do a ./manage.py syncdb
        3) Execute 'Recreate index links' locate in the tools menu
        4) Wait a few minutes
        
        Some warnings may be returned, but these are not fatal as they might 
        be related to missing metadata in some documents.