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* FreeBSD support contributed by Maxime Henrion (untested!)
* sendFile is now unsafeSendFile (continued support for a Handle as the
    output)
* sendFile' is now unsafeSendFile' (continued support for a Handle as the
    output)
* sendFile and sendFile' now take a Socket as the output instead of a Handle
    in order to be more semantically correct and typesafe (a Handle used for
    the output which was not created from a Socket will cause runtime errors).
    Thanks to Johan Tibell for this discussion.
* documentation extended / improved

Regards,
Matthew Elder