added the feature to save message as plain text (locale or UTF-8 encoding).
win32: added an option to play sound when new messages arrive.
libsylph/utils.[ch]: to_human_readable_buf(): new.
implemented concatenation of partial messages (RFC 2046).
updated copyright year.
remove_numbered_files(): made filename to number conversion unsigned (fixes undeleted IMAP caches with UIDs larger than INT_MAX).
added option to set only mail address of recipients when replying.
src/setup.c: check whether the specified location includes settings folder.
ignore case when checking mailing list post.
more fix for UID more than INT_MAX.
made tzoffset related functions thread-safe.
execute imap_cmd_ok() in another thread.
fixed the handling of GDK thread lock.
unix: fixed infinite loop bug.
win32: use CreateHardLink().
URI encode mailto: to protect '+'.
process quoted-pair correctly.
properly process CSV with double quotations.
supported In-Reply-To header in mailto URL.
made the default directory of file selection dialog document folder.
improved PGP/MIME compatibility.
fixed a bug that bold face was disabled with GLib 2.10 and Pango 1.12.
implemented RFC 2231 filename encoding on send.
added a hidden option "mime_command" for backward compatibility.
use filename-safe string for UIDL file.
imap_cmd_append(): send message contents all at once.
reduced memory usage on SMTP session.
prevent integer overflow on summary status.
modification for ML post with Reply-To.
win32: use ShellExecute() on print.
added '--configdir' option which specifies config directory.
win32: use ShellExecute() to launch attachments.
output g_log() messages to the log window and log file. Disabled console window on win32.
implemented 'Save all'.
removed mbs/wcs functions which are no longer required.
normalize address fields before encoding them.
changed the license of LibSylph from GPL to LGPL.
update progress bar when executing long IMAP4 operations.
adjusted the freqency of UI update on IMAP4.
added UI hints for IMAP4 operation.
made query-password function UI independent.
made some core modules library (libsylph).