Log Message:
Update to 0.58.

Changes:

# Wildcards (mput/mget) and recursive file transfer in PSFTP.
# You can now save your session details from the Change Settings
  dialog box, after you've started your session.
# Various improvements to Unicode support, including:

    * support for right-to-left and bidirectional text (Arabic,
      Hebrew etc). Thanks to arabeyes.org for design and most of
      the implementation.
    * support for Arabic text shaping, again thanks to arabeyes.org.
    * support for Unicode combining characters.

# Support for the xterm 256-colour control sequences.
# Port forwardings can now be reconfigured in mid-session.
# Support for IPv6. Thanks to unfix.org for having patiently maintained
  the patch for this until we were finally ready to integrate it.
# More configurability and flexibility in SSH-2 key exchange. In
  particular, PuTTY can now initiate repeat key exchange during the
  session, which means that if your server doesn't initiate it (OpenSSH
  is known not to bother) you can still have the cryptographic benefits.
# Bug fix: display artefacts caused by characters overflowing their
  character cell should now all be gone. (This would probably have
  bothered Windows ClearType users more than anyone else.)
# Bug fix: keepalives are now supported everywhere. (Previously they
  were supported by Windows GUI PuTTY, but were missing in Plink, PSFTP
  and the Unix port.)
# Miscellaneous improvements for CJK/IME users; many thanks to Hung-Te
  Lin for assistance.