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−Copyright (c) 2007-2016 Dmitriy Morozov <dmitriy@mrzv.org>.  All rights reserved.
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−
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−Redistribution and use in source and binary forms, with or without modification,
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−are permitted provided that the following conditions are met:
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−
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−(1) Redistributions of source code must retain the above copyright notice, this
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−list of conditions and the following disclaimer.
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−
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−(2) Redistributions in binary form must reproduce the above copyright notice,
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−this list of conditions and the following disclaimer in the documentation and/or
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−other materials provided with the distribution.
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−
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−(3) Neither the name of the copyright holder nor the names of its contributors
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−may be used to endorse or promote products derived from this software without
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−specific prior written permission.
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−
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−THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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−ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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−WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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−DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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−ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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−(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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−LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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−ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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−(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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−SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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−
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−You are under no obligation whatsoever to provide any bug fixes, patches, or
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−upgrades to the features, functionality or performance of the source code
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−("Enhancements") to anyone; however, if you choose to make your Enhancements
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−available either publicly, or directly to the author of this software, without
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−imposing a separate written license agreement for such Enhancements, then you
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−hereby grant the following license: a  non-exclusive, royalty-free perpetual
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−license to install, use, modify, prepare derivative works, incorporate into
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−other computer software, distribute, and sublicense such enhancements or
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−derivative works thereof, in binary and source code form.