3.0 highlight features (difference between 2.2.1 and 3.0)

* Message Language Extension (3.0 new)
  Japanese error messages
* change actives/members treatment of automatic subscribe (3.0 new)
   Caution for upgrade to 3.0
* MD5 check sum loop detection (3.0 new, optional)
* fix memory usage (3.0 new)
* new filtering rules added
    reject HTML mail (plaintext + the same content html part)
    handle multipart mail several ways (reject some content but allow others..)
    (a few virus checks)

Copyright (C) 1993-1999 Ken'ichi Fukamachi
         All rights reserved.
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