| 1 | Copyright 2010-2021 Mike Bostock
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| 2 | Copyright 2001 Robert Penner
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| 3 | All rights reserved.
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| 4 |
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| 5 | Redistribution and use in source and binary forms, with or without modification,
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| 6 | are permitted provided that the following conditions are met:
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| 7 |
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| 8 | * Redistributions of source code must retain the above copyright notice, this
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| 9 | list of conditions and the following disclaimer.
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| 10 |
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| 11 | * Redistributions in binary form must reproduce the above copyright notice,
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| 12 | this list of conditions and the following disclaimer in the documentation
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| 13 | and/or other materials provided with the distribution.
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| 14 |
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| 15 | * Neither the name of the author nor the names of contributors may be used to
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| 16 | endorse or promote products derived from this software without specific prior
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| 17 | written permission.
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| 18 |
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| 19 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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| 20 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| 21 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 22 | DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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| 23 | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| 24 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| 25 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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| 26 | ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 27 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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| 28 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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