LICENSE.txt

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

   1. Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.

   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
      the documentation and/or other materials provided with the
      distribution.

    THIS SOFTWARE IS  PROVIDED  BY  THE  COPYRIGHT  HOLDERS AND
    CONTRIBUTORS   ''AS IS''   AND   ANY   EXPRESS  OR  IMPLIED
    WARRANTIES, INCLUDING, BUT  NOT  LIMITED  TO,  THE  IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR  A PARTICULAR
    PURPOSE ARE DISCLAIMED. IN NO  EVENT  SHALL  THE  COPYRIGHT
    HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,  INDIRECT,
    INCIDENTAL, SPECIAL, EXEMPLARY,  OR  CONSEQUENTIAL  DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT  OF  SUBSTITUTE
    GOODS OR SERVICES;  LOSS  OF  USE,  DATA,  OR  PROFITS;  OR
    BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY  OF
    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,  OR  TORT
    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY  OUT
    OF THE USE  OF  THIS  SOFTWARE,  EVEN  IF  ADVISED  OF  THE
    POSSIBILITY OF SUCH DAMAGE.