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

Version 0.1.0   - 31 March 2002
  * Initial release