added the feature to save message as plain text (locale or UTF-8 encoding).
remove queue headers when moving messages from a queue folder (fixes Debian BTS #493546).
implemented concatenation of partial messages (RFC 2046).
update summary view on receiving on the fly.
update summary caches on receiving.
removed all warnings output with -Wall.
disabled the passphrase dialog on query search.
don't use off_t in struct.
added signature information to MsgInfo.
added 'Mark all read' to the folder context menu.
printing messages now follows 'Show all headers'.
don't show 'Empty trash' dialog if trashed messages don't exist.
implemented clearing of IMAP4 message caches on exit.
cache search result to speed up on and after the second search.
reflect flag changes on virtual folders in the real ones.
some modification of searching.
update caches and flags when reading message list from a folder.
changed the license of LibSylph from GPL to LGPL.
added 'View/Sort/by thread date'.
moved more modules to libsylph.
moved procmsg.c::procmsg_get_filter_keyword() to filter.c::filter_get_keyword_from_msg().
moved procmsg.c::procmsg_send_queue() to send_message.c::send_message_queue_all().
clear summary cache to prevent cache discrepancy after sending from queue.
put existing window in front when trying to reedit draft/queued messages which are already open.
disabled strict checking of caches by stat() and improved the performance.
added an option to apply filter rules to sent messages.
fixed a crash bug of IMAP4.
improved the thread creation.
Initial import of Sylpheed (GTK2 version).