+ - Fixed resuming of compose when session expired while writing, and make
+ sure the code only sets those variables that are needed in compose and
+ are not already set. Thanks James Bercegay from GulfTech for pointing
+ this out.
+ - Subfolders of system folders are not tagged as special in folder
+ management page in order to allow rename and delete operations with
+ subfolders (#1460011).
+ - Trash subfolders are allowed in courier. INBOX.Trash is not treated
+ as special on Courier, unless some SquirrelMail configuration option
+ marks this folder as special (#1354393). Configtest utility should
+ display warning, if Courier IMAP XMAGICTRASH extension is detected.
+ - Show purge link for Trash folder without any messages, if folder has
+ subfolders (#1413569).
+ - Custom SMTP AUTH configuration variables are moved from config_local.php
+ to main configuration file.
+ - Fixed subscription of new 'noselect' folders (#1315912).
+ - Moving the development documentation to the documentation module.
+ - Drop obsolete script plugins/make_archive.pl.
+ - Fix misspelled constant PREG_SPLIT_NI_EMPTY in sqimap_get_message
+ (#1543573).
+ - Provide View Unsafe Images link on viewing a text/html attachment.
+ - Added APOP, TLS and STLS support to mail_fetch plugin (#575299).
+ - Added Courier IMAP OUTBOX check to configtest utility.
+ - Moved login_form hook to its own table row on login page.
+ - Added check_plugin_version() function.
+ - If mailbox name starts with slash or contains ../, error message is
+ generated. Safety check for insecure default UW IMAP setup (#1557078).
+ - Ignore message copy errors when messages are deleted. Allows to delete
+ messages when quota is exceeded. (#614887) (#646386) (#1446026)
+ - Fixed unintended literal fetching (#1562271).
+ - Checked if configuration file is readable in configuration utility
+ (#1568355).
+ - Added PHP pspell extension support to squirrelspell plugin.
+ - Add CEST and MEST (non-standard) timezone codes for +0200.
+ - Add support for SpamAssassin's X-Spam-Status header (#1589520).
+ - Added plugin on/off switch, which completely disables all plugins
+ (optionally for one named user, otherwise for all users).
+ - Security: close cross site scripting vulnerability in draft, compose
+ and mailto functionality [CVE-2006-6142].
+ - Security: work around an issue in Internet Explorer that would guess
+ the mime type of a file based on contents, not Content-Type header.
+ - Security: Multiple IE cross site scripting issues related to the
+ generous parsing of the words 'expression' and 'url' by IE.
+ - Security: Removing @import when sanitizing html mail.
+ - Redesigned plugin hook system. do_hook_function() has been removed
+ and do_hook() now emulates do_hook_function()'s return value and
+ also has its plugin arguments passed by value, etc.