* In-Reply-To header was supported in mailto URL.
* Stop button was added to the main toolbar.
* An error message is displayed now when the decryption of PGP encrypted
messages failed.
* Remote commands such as 'compose', 'receive' and 'send' are disabled
when a modal dialog exists.
* Process termination is forced after the execution of finalizer routine.
* The behavior of 'Go to next unread' with changing folders was fixed.
* The sylpheed.desktop file was modified.
* Win32: A bug that the folder path separator was not processed correctly
in some cases (fixes path information becoming incorrect on renaming
subfolders).
* 2.4.0beta6 (development)
* The bug in automatic IMAP4 filtering that messages which were not
filtered were not counted as new ones was fixed.
* Win32: The workaroud for the redraw problem of GtkCList and GtkCTree
in GTK+ 2.10.11 was made.
* Win32: The stall on rebuilding folder tree which appeared since GTK+
2.10.11 was fixed.
* Win32: Environmental variable "LANGUAGE" was disabled (fixes incorrect
language selection on some environments).
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