• BUGFIX: Don't double-encode URLs (Roderick Monje).
• BUGFIX: Only use the content_type when it exists (Jean-Philippe Doyle).
• STABILITY: Better handling of the content-disposition header. Now supports file name that is either enclosed or not in double quotes and is case insensitive as per RC6266 grammar (Hasan Kumar, Yves Riel).
• STABILITY: Change database column type of attachment file size from unsigned 4-byte integer to unsigned 8-byte bigint. The former type limits attachment size to just over 2GB, which can easily be exceeded by a large video file (Laurent Arnoud, Alen Zamanyan).
• STABILITY: Better error message when thumbnail processing errors (Hayden Ball).
• STABILITY: Fix file linking issues around Windows (Akihiko Odaki).
• STABILITY: Files without an extension will now be checked for spoofing attempts (George Walters II).
• STABILITY: Manually close Tempfiles when we are done with them (Erkki Eilonen).