* Update check can also show alternative version as well as internal version now.
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* 'Open' menu was added to the attach context menu of the message composition window. This allows users to open attached files before sending.
* English Sylpheed FAQ was updated.
* Plug-ins are also loaded from user plug-in directory now.
* Unix: the default web browser command was changed to xdg-open, and obsolete commands were removed.
* Unix: the crash when using %f on IMAP messages at the action tool was fixed.
* The crash when clicking tray icon menu 'Get from current account' when no account exist was fixed.
* The crash on 64-bit architecture with LDAP was fixed (debian BTS #463366).
* Some GTK+ warnings were removed.
* Redundant debug or error messages were removed.
* The bug that MIME flags were not set to imported mbox file and filtered sent messages was fixed.
* The crash when POP3 session was cancelled while processing received mail was fixed.
* Win32: included libpng library was updated to 1.2.44 (security fix).
* Win32: included libtiff library was updated to 3.9.4 (security fix).