Version 0.2.1   - 3 April 2002
  * Since we might not have a parse-able 'Date-Received' or 'Date' field,
    use 5 different ways to guess the date of a message.

Version 0.2.0   - 3 April 2002
  * Added support for reading from MH mailboxes
  * Refuse to proceed if we would be making tempfiles in world-writable
    directories
  * Clamped down with lots of assert()s checking function parameters
  * Complain earlier if we do not have permission to write to the output
    directory
  * Use the 'Date' field of a message when constructing the 'From_' line
    from a maildir/MH mailbox if there is no 'Delivery-Date' field.

Version 0.1.0   - 31 March 2002
  * Initial release