Copyright (c) 2015 Wenzel Jakob, Daniele Panozzo, Marco Tarini,
and Olga Sorkine-Hornung. All rights reserved.

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
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3. Neither the name of the copyright holder nor the names of its contributors
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   without specific prior written permission.

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You are under no obligation whatsoever to provide any bug fixes, patches, or
upgrades to the features, functionality or performance of the source code
("Enhancements") to anyone; however, if you choose to make your Enhancements
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hereby grant the following license: a non-exclusive, royalty-free perpetual
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