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+** Blosc; version 1.5.0 -- https://github.com/Blosc/c-blosc
+For Blosc - A blocking, shuffling and lossless compression library
+
+Copyright (C) 2009-2018 Francesc Alted <francesc@blosc.org>
+Copyright (C) 2019-present Blosc Development team <blosc@blosc.org>
+
+Copyright (C) 2006 by Rob Landley <rob@landley.net>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+------
+
+** Audaspace; version 1.3.0 -- https://audaspace.github.io/
+** Cuda Wrangler; version cbf465b -- https://github.com/CudaWrangler/cuew
+** Draco; version 1.3.6 -- https://google.github.io/draco/
+** Embree; version 3.10 -- https://github.com/embree/embree
+** Mantaflow; version 0.13 -- http://mantaflow.com/
+** oneAPI Threading Building Block; version 2019_U9 --
+https://software.intel.com/en-us/oneapi/onetbb
+** OpenCL Wrangler; version 27a6867 -- https://github.com/OpenCLWrangler/clew
+** OpenImageDenoise; version 1.2.3 -- https://www.openimagedenoise.org/
+** OpenXR SDK; version 1.0.8 -- https://khronos.org/openxr
+** RangeTree; version 40ebed8aa209 -- https://github.com/ideasman42/rangetree-c
+** SDL Extension Wrangler; version 15edf8e --
+https://github.com/SDLWrangler/sdlew
+
+Apache License
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+
+------
+
+** OpenJPEG; version 2.3.1 -- https://github.com/uclouvain/openjpeg
+Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
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+------
+
+** Ceres Solver; version 2.0.0 -- http://ceres-solver.org/
+Ceres Solver - A fast non-linear least squares minimizer
+Copyright 2016 Google Inc. All rights reserved.
+** Curve-Fit-nD; version ddcd5bd -- https://github.com/ideasman42/curve-fit-nd
+Copyright (c) 2016, Blender Foundation.
+** Google C++ Testing Framework; version 1.10.0 --
+https://github.com/google/googletest
+Copyright 2007, Google Inc.
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+** OpenEXR; version 2.4.0 --
+https://github.com/AcademySoftwareFoundation/openexr
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+------
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+ appropriately publish on each copy an appropriate copyright notice and
+ disclaimer of warranty; keep intact all the notices that refer to this
+ License and to the absence of any warranty; and give any other recipients of
+ the Program a copy of this License along with the Program.
+
+ You may charge a fee for the physical act of transferring a copy, and you
+ may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion of it,
+ thus forming a work based on the Program, and copy and distribute such
+ modifications or work under the terms of Section 1 above, provided that you
+ also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices stating
+ that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in whole
+ or in part contains or is derived from the Program or any part thereof,
+ to be licensed as a whole at no charge to all third parties under the
+ terms of this License.
+
+ c) If the modified program normally reads commands interactively when
+ run, you must cause it, when started running for such interactive use in
+ the most ordinary way, to print or display an announcement including an
+ appropriate copyright notice and a notice that there is no warranty (or
+ else, saying that you provide a warranty) and that users may redistribute
+ the program under these conditions, and telling the user how to view a
+ copy of this License. (Exception: if the Program itself is interactive
+ but does not normally print such an announcement, your work based on the
+ Program is not required to print an announcement.)
+
+ These requirements apply to the modified work as a whole. If identifiable
+ sections of that work are not derived from the Program, and can be
+ reasonably considered independent and separate works in themselves, then
+ this License, and its terms, do not apply to those sections when you
+ distribute them as separate works. But when you distribute the same sections
+ as part of a whole which is a work based on the Program, the distribution of
+ the whole must be on the terms of this License, whose permissions for other
+ licensees extend to the entire whole, and thus to each and every part
+ regardless of who wrote it.
+
+ Thus, it is not the intent of this section to claim rights or contest your
+ rights to work written entirely by you; rather, the intent is to exercise
+ the right to control the distribution of derivative or collective works
+ based on the Program.
+
+ In addition, mere aggregation of another work not based on the Program with
+ the Program (or with a work based on the Program) on a volume of a storage
+ or distribution medium does not bring the other work under the scope of this
+ License.
+
+ 3. You may copy and distribute the Program (or a work based on it, under
+ Section 2) in object code or executable form under the terms of Sections 1
+ and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable source
+ code, which must be distributed under the terms of Sections 1 and 2 above
+ on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three years, to
+ give any third party, for a charge no more than your cost of physically
+ performing source distribution, a complete machine-readable copy of the
+ corresponding source code, to be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer to
+ distribute corresponding source code. (This alternative is allowed only
+ for noncommercial distribution and only if you received the program in
+ object code or executable form with such an offer, in accord with
+ Subsection b above.)
+
+ The source code for a work means the preferred form of the work for making
+ modifications to it. For an executable work, complete source code means all
+ the source code for all modules it contains, plus any associated interface
+ definition files, plus the scripts used to control compilation and
+ installation of the executable. However, as a special exception, the source
+ code distributed need not include anything that is normally distributed (in
+ either source or binary form) with the major components (compiler, kernel,
+ and so on) of the operating system on which the executable runs, unless that
+ component itself accompanies the executable.
+
+ If distribution of executable or object code is made by offering access to
+ copy from a designated place, then offering equivalent access to copy the
+ source code from the same place counts as distribution of the source code,
+ even though third parties are not compelled to copy the source along with
+ the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program except as
+ expressly provided under this License. Any attempt otherwise to copy,
+ modify, sublicense or distribute the Program is void, and will automatically
+ terminate your rights under this License. However, parties who have received
+ copies, or rights, from you under this License will not have their licenses
+ terminated so long as such parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not signed
+ it. However, nothing else grants you permission to modify or distribute the
+ Program or its derivative works. These actions are prohibited by law if you
+ do not accept this License. Therefore, by modifying or distributing the
+ Program (or any work based on the Program), you indicate your acceptance of
+ this License to do so, and all its terms and conditions for copying,
+ distributing or modifying the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+ Program), the recipient automatically receives a license from the original
+ licensor to copy, distribute or modify the Program subject to these terms
+ and conditions. You may not impose any further restrictions on the
+ recipients' exercise of the rights granted herein. You are not responsible
+ for enforcing compliance by third parties to this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+ infringement or for any other reason (not limited to patent issues),
+ conditions are imposed on you (whether by court order, agreement or
+ otherwise) that contradict the conditions of this License, they do not
+ excuse you from the conditions of this License. If you cannot distribute so
+ as to satisfy simultaneously your obligations under this License and any
+ other pertinent obligations, then as a consequence you may not distribute
+ the Program at all. For example, if a patent license would not permit
+ royalty-free redistribution of the Program by all those who receive copies
+ directly or indirectly through you, then the only way you could satisfy both
+ it and this License would be to refrain entirely from distribution of the
+ Program.
+
+ If any portion of this section is held invalid or unenforceable under any
+ particular circumstance, the balance of the section is intended to apply and
+ the section as a whole is intended to apply in other circumstances.
+
+ It is not the purpose of this section to induce you to infringe any patents
+ or other property right claims or to contest validity of any such claims;
+ this section has the sole purpose of protecting the integrity of the free
+ software distribution system, which is implemented by public license
+ practices. Many people have made generous contributions to the wide range of
+ software distributed through that system in reliance on consistent
+ application of that system; it is up to the author/donor to decide if he or
+ she is willing to distribute software through any other system and a
+ licensee cannot impose that choice.
+
+ This section is intended to make thoroughly clear what is believed to be a
+ consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in certain
+ countries either by patents or by copyrighted interfaces, the original
+ copyright holder who places the Program under this License may add an
+ explicit geographical distribution limitation excluding those countries, so
+ that distribution is permitted only in or among countries not thus excluded.
+ In such case, this License incorporates the limitation as if written in the
+ body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions of
+ the General Public License from time to time. Such new versions will be
+ similar in spirit to the present version, but may differ in detail to
+ address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the Program
+ specifies a version number of this License which applies to it and "any
+ later version", you have the option of following the terms and conditions
+ either of that version or of any later version published by the Free
+ Software Foundation. If the Program does not specify a version number of
+ this License, you may choose any version ever published by the Free Software
+ Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free programs
+ whose distribution conditions are different, write to the author to ask for
+ permission. For software which is copyrighted by the Free Software
+ Foundation, write to the Free Software Foundation; we sometimes make
+ exceptions for this. Our decision will be guided by the two goals of
+ preserving the free status of all derivatives of our free software and of
+ promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
+ THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+ OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+ PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+ OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+ THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
+ PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+ CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+ WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+ REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+ INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+ OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+ LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+ THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+ PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+<one line to give the program's name and an idea of what it does.>
+
+Copyright (C) <yyyy> <name of author>
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
+Street, Fifth Floor, Boston, MA 02110-1301 , USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it
+starts in an interactive mode:
+
+Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
+with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software,
+and you are welcome to redistribute it under certain conditions; type `show c'
+for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may be
+called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your school,
+if any, to sign a "copyright disclaimer" for the program, if necessary. Here is
+a sample; alter the names:
+
+Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+`Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+< signature of Ty Coon > , 1 April 1989 Ty Coon, President of Vice
+
+------
+
+** FFTW; version 3.3.8 -- http://www.fftw.org/
+Copyright (c) 2003, 2007-14 Matteo Frigo
+Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
+** GMP; version 6.2.0 -- https://gmplib.org/
+Copyright 1996-2020 Free Software Foundation, Inc.
+** OpenAL; version 1.20.1 -- http://openal-soft.org
+Copyright (c) 2015, Archontis Politis
+Copyright (c) 2019, Christopher Robinson
+
+GNU GENERAL PUBLIC LICENSE
+
+Version 2, June 1991
+
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 , USA
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+Preamble
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public License is intended to
+guarantee your freedom to share and change free software--to make sure the
+software is free for all its users. This General Public License applies to most
+of the Free Software Foundation's software and to any other program whose
+authors commit to using it. (Some other Free Software Foundation software is
+covered by the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our
+General Public Licenses are designed to make sure that you have the freedom to
+distribute copies of free software (and charge for this service if you wish),
+that you receive source code or can get it if you want it, that you can change
+the software or use pieces of it in new free programs; and that you know you
+can do these things.
+
+To protect your rights, we need to make restrictions that forbid anyone to deny
+you these rights or to ask you to surrender the rights. These restrictions
+translate to certain responsibilities for you if you distribute copies of the
+software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis or for
+a fee, you must give the recipients all the rights that you have. You must make
+sure that they, too, receive or can get the source code. And you must show them
+these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the software, and (2)
+offer you this license which gives you legal permission to copy, distribute
+and/or modify the software.
+
+Also, for each author's protection and ours, we want to make certain that
+everyone understands that there is no warranty for this free software. If the
+software is modified by someone else and passed on, we want its recipients to
+know that what they have is not the original, so that any problems introduced
+by others will not reflect on the original authors' reputations.
+
+Finally, any free program is threatened constantly by software patents. We wish
+to avoid the danger that redistributors of a free program will individually
+obtain patent licenses, in effect making the program proprietary. To prevent
+this, we have made it clear that any patent must be licensed for everyone's
+free use or not licensed at all.
+
+The precise terms and conditions for copying, distribution and modification
+follow.
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains a notice
+ placed by the copyright holder saying it may be distributed under the terms
+ of this General Public License. The "Program", below, refers to any such
+ program or work, and a "work based on the Program" means either the Program
+ or any derivative work under copyright law: that is to say, a work
+ containing the Program or a portion of it, either verbatim or with
+ modifications and/or translated into another language. (Hereinafter,
+ translation is included without limitation in the term "modification".) Each
+ licensee is addressed as "you".
+
+ Activities other than copying, distribution and modification are not covered
+ by this License; they are outside its scope. The act of running the Program
+ is not restricted, and the output from the Program is covered only if its
+ contents constitute a work based on the Program (independent of having been
+ made by running the Program). Whether that is true depends on what the
+ Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's source code
+ as you receive it, in any medium, provided that you conspicuously and
+ appropriately publish on each copy an appropriate copyright notice and
+ disclaimer of warranty; keep intact all the notices that refer to this
+ License and to the absence of any warranty; and give any other recipients of
+ the Program a copy of this License along with the Program.
+
+ You may charge a fee for the physical act of transferring a copy, and you
+ may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion of it,
+ thus forming a work based on the Program, and copy and distribute such
+ modifications or work under the terms of Section 1 above, provided that you
+ also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices stating
+ that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in whole
+ or in part contains or is derived from the Program or any part thereof,
+ to be licensed as a whole at no charge to all third parties under the
+ terms of this License.
+
+ c) If the modified program normally reads commands interactively when
+ run, you must cause it, when started running for such interactive use in
+ the most ordinary way, to print or display an announcement including an
+ appropriate copyright notice and a notice that there is no warranty (or
+ else, saying that you provide a warranty) and that users may redistribute
+ the program under these conditions, and telling the user how to view a
+ copy of this License. (Exception: if the Program itself is interactive
+ but does not normally print such an announcement, your work based on the
+ Program is not required to print an announcement.)
+
+ These requirements apply to the modified work as a whole. If identifiable
+ sections of that work are not derived from the Program, and can be
+ reasonably considered independent and separate works in themselves, then
+ this License, and its terms, do not apply to those sections when you
+ distribute them as separate works. But when you distribute the same sections
+ as part of a whole which is a work based on the Program, the distribution of
+ the whole must be on the terms of this License, whose permissions for other
+ licensees extend to the entire whole, and thus to each and every part
+ regardless of who wrote it.
+
+ Thus, it is not the intent of this section to claim rights or contest your
+ rights to work written entirely by you; rather, the intent is to exercise
+ the right to control the distribution of derivative or collective works
+ based on the Program.
+
+ In addition, mere aggregation of another work not based on the Program with
+ the Program (or with a work based on the Program) on a volume of a storage
+ or distribution medium does not bring the other work under the scope of this
+ License.
+
+ 3. You may copy and distribute the Program (or a work based on it, under
+ Section 2) in object code or executable form under the terms of Sections 1
+ and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable source
+ code, which must be distributed under the terms of Sections 1 and 2 above
+ on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three years, to
+ give any third party, for a charge no more than your cost of physically
+ performing source distribution, a complete machine-readable copy of the
+ corresponding source code, to be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer to
+ distribute corresponding source code. (This alternative is allowed only
+ for noncommercial distribution and only if you received the program in
+ object code or executable form with such an offer, in accord with
+ Subsection b above.)
+
+ The source code for a work means the preferred form of the work for making
+ modifications to it. For an executable work, complete source code means all
+ the source code for all modules it contains, plus any associated interface
+ definition files, plus the scripts used to control compilation and
+ installation of the executable. However, as a special exception, the source
+ code distributed need not include anything that is normally distributed (in
+ either source or binary form) with the major components (compiler, kernel,
+ and so on) of the operating system on which the executable runs, unless that
+ component itself accompanies the executable.
+
+ If distribution of executable or object code is made by offering access to
+ copy from a designated place, then offering equivalent access to copy the
+ source code from the same place counts as distribution of the source code,
+ even though third parties are not compelled to copy the source along with
+ the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program except as
+ expressly provided under this License. Any attempt otherwise to copy,
+ modify, sublicense or distribute the Program is void, and will automatically
+ terminate your rights under this License. However, parties who have received
+ copies, or rights, from you under this License will not have their licenses
+ terminated so long as such parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not signed
+ it. However, nothing else grants you permission to modify or distribute the
+ Program or its derivative works. These actions are prohibited by law if you
+ do not accept this License. Therefore, by modifying or distributing the
+ Program (or any work based on the Program), you indicate your acceptance of
+ this License to do so, and all its terms and conditions for copying,
+ distributing or modifying the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+ Program), the recipient automatically receives a license from the original
+ licensor to copy, distribute or modify the Program subject to these terms
+ and conditions. You may not impose any further restrictions on the
+ recipients' exercise of the rights granted herein. You are not responsible
+ for enforcing compliance by third parties to this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+ infringement or for any other reason (not limited to patent issues),
+ conditions are imposed on you (whether by court order, agreement or
+ otherwise) that contradict the conditions of this License, they do not
+ excuse you from the conditions of this License. If you cannot distribute so
+ as to satisfy simultaneously your obligations under this License and any
+ other pertinent obligations, then as a consequence you may not distribute
+ the Program at all. For example, if a patent license would not permit
+ royalty-free redistribution of the Program by all those who receive copies
+ directly or indirectly through you, then the only way you could satisfy both
+ it and this License would be to refrain entirely from distribution of the
+ Program.
+
+ If any portion of this section is held invalid or unenforceable under any
+ particular circumstance, the balance of the section is intended to apply and
+ the section as a whole is intended to apply in other circumstances.
+
+ It is not the purpose of this section to induce you to infringe any patents
+ or other property right claims or to contest validity of any such claims;
+ this section has the sole purpose of protecting the integrity of the free
+ software distribution system, which is implemented by public license
+ practices. Many people have made generous contributions to the wide range of
+ software distributed through that system in reliance on consistent
+ application of that system; it is up to the author/donor to decide if he or
+ she is willing to distribute software through any other system and a
+ licensee cannot impose that choice.
+
+ This section is intended to make thoroughly clear what is believed to be a
+ consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in certain
+ countries either by patents or by copyrighted interfaces, the original
+ copyright holder who places the Program under this License may add an
+ explicit geographical distribution limitation excluding those countries, so
+ that distribution is permitted only in or among countries not thus excluded.
+ In such case, this License incorporates the limitation as if written in the
+ body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions of
+ the General Public License from time to time. Such new versions will be
+ similar in spirit to the present version, but may differ in detail to
+ address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the Program
+ specifies a version number of this License which applies to it and "any
+ later version", you have the option of following the terms and conditions
+ either of that version or of any later version published by the Free
+ Software Foundation. If the Program does not specify a version number of
+ this License, you may choose any version ever published by the Free Software
+ Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free programs
+ whose distribution conditions are different, write to the author to ask for
+ permission. For software which is copyrighted by the Free Software
+ Foundation, write to the Free Software Foundation; we sometimes make
+ exceptions for this. Our decision will be guided by the two goals of
+ preserving the free status of all derivatives of our free software and of
+ promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
+ THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+ OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+ PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+ OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO
+ THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
+ PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+ CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+ WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+ REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+ INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+ OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO
+ LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR
+ THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+ PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+< one line to give the program's name and an idea of what it does. >
+
+Copyright (C) < yyyy > < name of author >
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
+Street, Fifth Floor, Boston, MA 02110-1301 , USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it
+starts in an interactive mode:
+
+Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
+with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software,
+and you are welcome to redistribute it under certain conditions; type `show c'
+for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may be
+called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your school,
+if any, to sign a "copyright disclaimer" for the program, if necessary. Here is
+a sample; alter the names:
+
+Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+`Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+< signature of Ty Coon > , 1 April 1989 Ty Coon, President of Vice This General
+Public License does not permit incorporating your program into proprietary
+programs. If your program is a subroutine library, you may consider it more
+useful to permit linking proprietary applications with the library. If this is
+what you want to do, use the GNU Lesser General Public License instead of this
+License.
+
+------
+
+** miniLZO; version 2.08 -- http://www.oberhumer.com/opensource/lzo/
+LZO and miniLZO are Copyright (C) 1996-2014 Markus Franz Xaver Oberhumer
+All Rights Reserved.
+** The FreeType Project; version 2.10.2 --
+https://sourceforge.net/projects/freetype
+Copyright (C) 1996-2020 by David Turner, Robert Wilhelm, and Werner Lemberg.
+** X Drag and Drop; version 2000-08-08 --
+https://freedesktop.org/wiki/Specifications/XDND/
+xdnd.c, xdnd.h - C program library for handling the Xdnd protocol
+Copyright (C) 1996-2000 Paul Sheer
+
+GNU GENERAL PUBLIC LICENSE
+
+Version 2, June 1991
+
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 , USA
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+Preamble
+
+The licenses for most software are designed to take away your freedom to share
+and change it. By contrast, the GNU General Public License is intended to
+guarantee your freedom to share and change free software--to make sure the
+software is free for all its users. This General Public License applies to most
+of the Free Software Foundation's software and to any other program whose
+authors commit to using it. (Some other Free Software Foundation software is
+covered by the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our
+General Public Licenses are designed to make sure that you have the freedom to
+distribute copies of free software (and charge for this service if you wish),
+that you receive source code or can get it if you want it, that you can change
+the software or use pieces of it in new free programs; and that you know you
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+
+To protect your rights, we need to make restrictions that forbid anyone to deny
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+software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis or for
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+sure that they, too, receive or can get the source code. And you must show them
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+We protect your rights with two steps: (1) copyright the software, and (2)
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+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains a notice
+ placed by the copyright holder saying it may be distributed under the terms
+ of this General Public License. The "Program", below, refers to any such
+ program or work, and a "work based on the Program" means either the Program
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+ containing the Program or a portion of it, either verbatim or with
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+ translation is included without limitation in the term "modification".) Each
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+
+ Activities other than copying, distribution and modification are not covered
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+
+ 1. You may copy and distribute verbatim copies of the Program's source code
+ as you receive it, in any medium, provided that you conspicuously and
+ appropriately publish on each copy an appropriate copyright notice and
+ disclaimer of warranty; keep intact all the notices that refer to this
+ License and to the absence of any warranty; and give any other recipients of
+ the Program a copy of this License along with the Program.
+
+ You may charge a fee for the physical act of transferring a copy, and you
+ may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion of it,
+ thus forming a work based on the Program, and copy and distribute such
+ modifications or work under the terms of Section 1 above, provided that you
+ also meet all of these conditions:
+
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+ b) You must cause any work that you distribute or publish, that in whole
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+ If any portion of this section is held invalid or unenforceable under any
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+
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+
+ 10. If you wish to incorporate parts of the Program into other free programs
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+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
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+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
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+pointer to where the full notice is found.
+
+<one line to give the program's name and an idea of what it does.>
+
+Copyright (C) <yyyy> <name of author>
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
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+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
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+Street, Fifth Floor, Boston, MA 02110-1301 , USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it
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+
+Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
+with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software,
+and you are welcome to redistribute it under certain conditions; type `show c'
+for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may be
+called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your school,
+if any, to sign a "copyright disclaimer" for the program, if necessary. Here is
+a sample; alter the names:
+
+Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+`Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+< signature of Ty Coon > , 1 April 1989 Ty Coon, President of Vice This General
+Public License does not permit incorporating your program into proprietary
+programs. If your program is a subroutine library, you may consider it more
+useful to permit linking proprietary applications with the library. If this is
+what you want to do, use the GNU Lesser General Public License instead of this
+License.
+
+------
+
+** Eigen, template library for linear algebra: matrices, vectors, numerical
+solvers, and related algorithms; version 3.2.7 --
+http://eigen.tuxfamily.org/index.php?title=Main_Page
+This file is part of Eigen, a lightweight C++ template library for linear
+algebra.
+** Free Spacenav; version 0.2.3 --
+http://downloads.sourceforge.net/project/spacenav
+Copyright (C) 2007-2019 John Tsiombikas <nuclear@member.fsf.org>
+
+GNU GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <http s ://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+Preamble
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+------
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+** FFmpeg; version 4.2.3 -- http://ffmpeg.org/
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+Ty Coon, President of Vice
+
+That's all there is to it!
+
+------
+
+** Libsndfile; version 1.0.28 -- http://www.mega-nerd.com/libsndfile/
+Copyright (C) 2011-2016 Erik de Castro Lopo <erikd@mega-nerd.com>
+
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+ following:
+
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+ the terms of this License.
+
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+ work based on the Library, and explaining where to find the accompanying
+ uncombined form of the same work.
+
+ 6. Revised Versions of the GNU Lesser General Public License.
+
+ The Free Software Foundation may publish revised and/or new versions of the
+ GNU Lesser General Public License from time to time. Such new versions will
+ be similar in spirit to the present version, but may differ in detail to
+ address new problems or concerns.
+
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+ received it specifies that a certain numbered version of the GNU Lesser
+ General Public License "or any later version" applies to it, you have the
+ option of following the terms and conditions either of that published
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+ If the Library as you received it does not specify a version number of the
+ GNU Lesser General Public License, you may choose any version of the GNU
+ Lesser General Public License ever published by the Free Software
+ Foundation.
+
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+ authorization for you to choose that version for the Library.
+
+------
+
+** LIBPNG; version 1.6.37 -- http://prdownloads.sourceforge.net/libpng
+* Copyright (c) 1995-2019 The PNG Reference Library Authors.
+ * Copyright (c) 2018-2019 Cosmin Truta.
+ * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson.
+ * Copyright (c) 1996-1997 Andreas Dilger.
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
+
+This copy of the libpng notices is provided for your convenience. In case of
+any discrepancy between this copy and the notices in the file png.h that is
+included in the libpng distribution, the latter shall prevail.
+
+COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+
+If you modify libpng you may insert additional notices immediately following
+this sentence.
+
+This code is released under the libpng license.
+
+libpng versions 1.2.6, August 15, 2004, through 1.4.5, December 9, 2010, are
+Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are distributed
+according to the same disclaimer and license as libpng-1.2.5 with the following
+individual added to the list of Contributing Authors
+
+Cosmin Truta
+
+libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
+
+Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are distributed according to
+the same disclaimer and license as libpng-1.0.6 with the following individuals
+added to the list of Contributing Authors
+
+Simon-Pierre Cadieux
+
+Eric S. Raymond
+
+Gilles Vollant
+
+and with the following additions to the disclaimer:
+
+There is no warranty against interference with your enjoyment of the library or
+against infringement. There is no warranty that our efforts or the library will
+fulfill any of your particular purposes or needs. This library is provided with
+all faults, and the entire risk of satisfactory quality, performance, accuracy,
+and effort is with the user.
+
+libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
+
+Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are distributed according
+to the same disclaimer and license as libpng-0.96, with the following
+individuals added to the list of Contributing Authors:
+
+Tom Lane
+
+Glenn Randers-Pehrson
+
+Willem van Schaik
+
+libpng versions 0.89, June 1996, through 0.96, May 1997, are
+
+Copyright (c) 1996, 1997 Andreas Digger
+
+Distributed according to the same disclaimer and license as libpng-0.88, with
+the following individuals added to the list of Contributing Authors:
+
+John Bowler
+
+Kevin Bracey
+
+Sam Bushell
+
+Magnus Holmgren
+
+Greg Roelofs
+
+Tom Tanner
+
+libpng versions 0.5, May 1995, through 0.88, January 1996, are
+
+Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
+
+For the purposes of this copyright and license, "Contributing Authors" is
+defined as the following set of individuals:
+
+Andreas Dilger
+
+Dave Martindale
+
+Guy Eric Schalnat
+
+Paul Schmidt
+
+Tim Wegner
+
+The PNG Reference Library is supplied "AS IS". The Contributing Authors and
+Group 42, Inc. disclaim all warranties, expressed or implied, including,
+without limitation, the warranties of merchantability and of fitness for any
+purpose. The Contributing Authors and Group 42, Inc. assume no liability for
+direct, indirect, incidental, special, exemplary, or consequential damages,
+which may result from the use of the PNG Reference Library, even if advised of
+the possibility of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute this source
+code, or portions hereof, for any purpose, without fee, subject to the
+following restrictions:
+
+ 1. The origin of this source code must not be misrepresented.
+
+ 2. Altered versions must be plainly marked as such and must not be
+ misrepresented as being the original source.
+
+ 3. This Copyright notice may not be removed or altered from any source or
+ altered source distribution.
+
+The Contributing Authors and Group 42, Inc. specifically permit, without fee,
+and encourage the use of this source code as a component to supporting the PNG
+file format in commercial products. If you use this source code in a product,
+acknowledgment is not required but would be appreciated.
+
+A "png_get_copyright" function is available, for convenient use in "about"
+boxes and the like:
+
+printf("%s",png_get_copyright(NULL));
+
+Also, the PNG logo (in PNG format, of course) is supplied in the files
+"pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
+
+Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a
+certification mark of the Open Source Initiative.
+
+Glenn Randers-Pehrson
+
+glennrp at users.sourceforge.net
+
+December 9, 2010
+
+------
+
+** Libxml2; version 2.9.10 -- http://xmlsoft.org/
+Copyright (C) 1998-2012 Daniel Veillard. All Rights Reserved.
+** Mesa 3D; version 18.3.1 -- https://www.mesa3d.org/
+Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
+** OPENCollada; version 1.6.68 -- https://github.com/KhronosGroup/OpenCOLLADA
+Copyright (c) 2008-2009 NetAllied Systems GmbH
+** PugiXML; version 1.10 -- http://pugixml.org/
+Copyright (c) 2006-2020 Arseny Kapoulkine
+** QuadriFlow; version 27a6867 -- https://github.com/hjwdzh/QuadriFlow
+Copyright (c) 2018 Jingwei Huang, Yichao Zhou, Matthias Niessner,
+Jonathan Shewchuk and Leonidas Guibas. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+------
+
+** NanoVDB; version e62f7a0bf1e27397223c61ddeaaf57edf111b77f --
+https://github.com/AcademySoftwareFoundation/openvdb
+Copyright Contributors to the OpenVDB Project
+** OpenVDB; version 7.0.0 -- http://www.openvdb.org/
+Copyright Contributors to the OpenVDB Project
+
+Mozilla Public License Version 2.0
+
+ 1. Definitions
+
+ 1.1. "Contributor" means each individual or legal entity that creates,
+ contributes to the creation of, or owns Covered Software.
+
+ 1.2. "Contributor Version" means the combination of the Contributions of
+ others (if any) used by a Contributor and that particular Contributor's
+ Contribution.
+
+ 1.3. "Contribution" means Covered Software of a particular Contributor.
+
+ 1.4. "Covered Software" means Source Code Form to which the initial
+ Contributor has attached the notice in Exhibit A, the Executable Form of
+ such Source Code Form, and Modifications of such Source Code Form, in
+ each case including portions thereof.
+
+ 1.5. "Incompatible With Secondary Licenses" means
+
+ (a) that the initial Contributor has attached the notice described in
+ Exhibit B to the Covered Software; or
+
+ (b) that the Covered Software was made available under the terms of
+ version 1.1 or earlier of the License, but not also under the terms of
+ a Secondary License.
+
+ 1.6. "Executable Form" means any form of the work other than Source Code
+ Form.
+
+ 1.7. "Larger Work" means a work that combines Covered Software with other
+ material, in a separate file or files, that is not Covered Software.
+
+ 1.8. "License" means this document.
+
+ 1.9. "Licensable" means having the right to grant, to the maximum extent
+ possible, whether at the time of the initial grant or subsequently, any
+ and all of the rights conveyed by this License.
+
+ 1.10. "Modifications" means any of the following:
+
+ (a) any file in Source Code Form that results from an addition to,
+ deletion from, or modification of the contents of Covered Software; or
+
+ (b) any new file in Source Code Form that contains any Covered
+ Software.
+
+ 1.11. "Patent Claims" of a Contributor means any patent claim(s),
+ including without limitation, method, process, and apparatus claims, in
+ any patent Licensable by such Contributor that would be infringed, but
+ for the grant of the License, by the making, using, selling, offering for
+ sale, having made, import, or transfer of either its Contributions or its
+ Contributor Version.
+
+ 1.12. "Secondary License" means either the GNU General Public License,
+ Version 2.0, the GNU Lesser General Public License, Version 2.1, the GNU
+ Affero General Public License, Version 3.0, or any later versions of
+ those licenses.
+
+ 1.13. "Source Code Form" means the form of the work preferred for making
+ modifications.
+
+ 1.14. "You" (or "Your") means an individual or a legal entity exercising
+ rights under this License. For legal entities, "You" includes any entity
+ that controls, is controlled by, or is under common control with You. For
+ purposes of this definition, "control" means (a) the power, direct or
+ indirect, to cause the direction or management of such entity, whether by
+ contract or otherwise, or (b) ownership of more than fifty percent (50%)
+ of the outstanding shares or beneficial ownership of such entity.
+
+ 2. License Grants and Conditions
+
+ 2.1. Grants
+
+ Each Contributor hereby grants You a world-wide, royalty-free,
+ non-exclusive license:
+
+ (a) under intellectual property rights (other than patent or
+ trademark) Licensable by such Contributor to use, reproduce, make
+ available, modify, display, perform, distribute, and otherwise exploit
+ its Contributions, either on an unmodified basis, with Modifications,
+ or as part of a Larger Work; and
+
+ (b) under Patent Claims of such Contributor to make, use, sell, offer
+ for sale, have made, import, and otherwise transfer either its
+ Contributions or its Contributor Version.
+
+ 2.2. Effective Date
+
+ The licenses granted in Section 2.1 with respect to any Contribution
+ become effective for each Contribution on the date the Contributor first
+ distributes such Contribution.
+
+ 2.3. Limitations on Grant Scope
+
+ The licenses granted in this Section 2 are the only rights granted under
+ this License. No additional rights or licenses will be implied from the
+ distribution or licensing of Covered Software under this License.
+ Notwithstanding Section 2.1(b) above, no patent license is granted by a
+ Contributor:
+
+ (a) for any code that a Contributor has removed from Covered Software;
+ or
+
+ (b) for infringements caused by: (i) Your and any other third party's
+ modifications of Covered Software, or (ii) the combination of its
+ Contributions with other software (except as part of its Contributor
+ Version); or
+
+ (c) under Patent Claims infringed by Covered Software in the absence
+ of its Contributions.
+
+ This License does not grant any rights in the trademarks, service marks,
+ or logos of any Contributor (except as may be necessary to comply with
+ the notice requirements in Section 3.4).
+
+ 2.4. Subsequent Licenses
+
+ No Contributor makes additional grants as a result of Your choice to
+ distribute the Covered Software under a subsequent version of this
+ License (see Section 10.2) or under the terms of a Secondary License (if
+ permitted under the terms of Section 3.3).
+
+ 2.5. Representation
+
+ Each Contributor represents that the Contributor believes its
+ Contributions are its original creation(s) or it has sufficient rights to
+ grant the rights to its Contributions conveyed by this License.
+
+ 2.6. Fair Use
+
+ This License is not intended to limit any rights You have under
+ applicable copyright doctrines of fair use, fair dealing, or other
+ equivalents.
+
+ 2.7. Conditions
+
+ Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+ Section 2.1.
+
+ 3. Responsibilities
+
+ 3.1. Distribution of Source Form
+
+ All distribution of Covered Software in Source Code Form, including any
+ Modifications that You create or to which You contribute, must be under
+ the terms of this License. You must inform recipients that the Source
+ Code Form of the Covered Software is governed by the terms of this
+ License, and how they can obtain a copy of this License. You may not
+ attempt to alter or restrict the recipients' rights in the Source Code
+ Form.
+
+ 3.2. Distribution of Executable Form
+
+ If You distribute Covered Software in Executable Form then:
+
+ (a) such Covered Software must also be made available in Source Code
+ Form, as described in Section 3.1, and You must inform recipients of
+ the Executable Form how they can obtain a copy of such Source Code
+ Form by reasonable means in a timely manner, at a charge no more than
+ the cost of distribution to the recipient; and
+
+ (b) You may distribute such Executable Form under the terms of this
+ License, or sublicense it under different terms, provided that the
+ license for the Executable Form does not attempt to limit or alter the
+ recipients' rights in the Source Code Form under this License.
+
+ 3.3. Distribution of a Larger Work
+
+ You may create and distribute a Larger Work under terms of Your choice,
+ provided that You also comply with the requirements of this License for
+ the Covered Software. If the Larger Work is a combination of Covered
+ Software with a work governed by one or more Secondary Licenses, and the
+ Covered Software is not Incompatible With Secondary Licenses, this
+ License permits You to additionally distribute such Covered Software
+ under the terms of such Secondary License(s), so that the recipient of
+ the Larger Work may, at their option, further distribute the Covered
+ Software under the terms of either this License or such Secondary
+ License(s).
+
+ 3.4. Notices
+
+ You may not remove or alter the substance of any license notices
+ (including copyright notices, patent notices, disclaimers of warranty, or
+ limitations of liability) contained within the Source Code Form of the
+ Covered Software, except that You may alter any license notices to the
+ extent required to remedy known factual inaccuracies.
+
+ 3.5. Application of Additional Terms
+
+ You may choose to offer, and to charge a fee for, warranty, support,
+ indemnity or liability obligations to one or more recipients of Covered
+ Software. However, You may do so only on Your own behalf, and not on
+ behalf of any Contributor. You must make it absolutely clear that any
+ such warranty, support, indemnity, or liability obligation is offered by
+ You alone, and You hereby agree to indemnify every Contributor for any
+ liability incurred by such Contributor as a result of warranty, support,
+ indemnity or liability terms You offer. You may include additional
+ disclaimers of warranty and limitations of liability specific to any
+ jurisdiction.
+
+ 4. Inability to Comply Due to Statute or Regulation
+
+ If it is impossible for You to comply with any of the terms of this License
+ with respect to some or all of the Covered Software due to statute, judicial
+ order, or regulation then You must: (a) comply with the terms of this
+ License to the maximum extent possible; and (b) describe the limitations and
+ the code they affect. Such description must be placed in a text file
+ included with all distributions of the Covered Software under this License.
+ Except to the extent prohibited by statute or regulation, such description
+ must be sufficiently detailed for a recipient of ordinary skill to be able
+ to understand it.
+
+ 5. Termination
+
+ 5.1. The rights granted under this License will terminate automatically
+ if You fail to comply with any of its terms. However, if You become
+ compliant, then the rights granted under this License from a particular
+ Contributor are reinstated (a) provisionally, unless and until such
+ Contributor explicitly and finally terminates Your grants, and (b) on an
+ ongoing basis, if such Contributor fails to notify You of the
+ non-compliance by some reasonable means prior to 60 days after You have
+ come back into compliance. Moreover, Your grants from a particular
+ Contributor are reinstated on an ongoing basis if such Contributor
+ notifies You of the non-compliance by some reasonable means, this is the
+ first time You have received notice of non-compliance with this License
+ from such Contributor, and You become compliant prior to 30 days after
+ Your receipt of the notice.
+
+ 5.2. If You initiate litigation against any entity by asserting a patent
+ infringement claim (excluding declaratory judgment actions,
+ counter-claims, and cross-claims) alleging that a Contributor Version
+ directly or indirectly infringes any patent, then the rights granted to
+ You by any and all Contributors for the Covered Software under Section
+ 2.1 of this License shall terminate.
+
+ 5.3. In the event of termination under Sections 5.1 or 5.2 above, all end
+ user license agreements (excluding distributors and resellers) which have
+ been validly granted by You or Your distributors under this License prior
+ to termination shall survive termination.
+
+ 6. Disclaimer of Warranty
+
+ Covered Software is provided under this License on an "as is" basis, without
+ warranty of any kind, either expressed, implied, or statutory, including,
+ without limitation, warranties that the Covered Software is free of defects,
+ merchantable, fit for a particular purpose or non-infringing. The entire
+ risk as to the quality and performance of the Covered Software is with You.
+ Should any Covered Software prove defective in any respect, You (not any
+ Contributor) assume the cost of any necessary servicing, repair, or
+ correction. This disclaimer of warranty constitutes an essential part of
+ this License. No use of any Covered Software is authorized under this
+ License except under this disclaimer.
+
+ 7. Limitation of Liability
+
+ Under no circumstances and under no legal theory, whether tort (including
+ negligence), contract, or otherwise, shall any Contributor, or anyone who
+ distributes Covered Software as permitted above, be liable to You for any
+ direct, indirect, special, incidental, or consequential damages of any
+ character including, without limitation, damages for lost profits, loss of
+ goodwill, work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses, even if such party shall have been
+ informed of the possibility of such damages. This limitation of liability
+ shall not apply to liability for death or personal injury resulting from
+ such party's negligence to the extent applicable law prohibits such
+ limitation. Some jurisdictions do not allow the exclusion or limitation of
+ incidental or consequential damages, so this exclusion and limitation may
+ not apply to You.
+
+ 8. Litigation
+
+ Any litigation relating to this License may be brought only in the courts of
+ a jurisdiction where the defendant maintains its principal place of business
+ and such litigation shall be governed by laws of that jurisdiction, without
+ reference to its conflict-of-law provisions. Nothing in this Section shall
+ prevent a party's ability to bring cross-claims or counter-claims.
+
+ 9. Miscellaneous
+
+ This License represents the complete agreement concerning the subject matter
+ hereof. If any provision of this License is held to be unenforceable, such
+ provision shall be reformed only to the extent necessary to make it
+ enforceable. Any law or regulation which provides that the language of a
+ contract shall be construed against the drafter shall not be used to
+ construe this License against a Contributor.
+
+ 10. Versions of the License
+
+ 10.1. New Versions
+
+ Mozilla Foundation is the license steward. Except as provided in Section
+ 10.3, no one other than the license steward has the right to modify or
+ publish new versions of this License. Each version will be given a
+ distinguishing version number.
+
+ 10.2. Effect of New Versions
+
+ You may distribute the Covered Software under the terms of the version of
+ the License under which You originally received the Covered Software, or
+ under the terms of any subsequent version published by the license
+ steward.
+
+ 10.3. Modified Versions
+
+ If you create software not governed by this License, and you want to
+ create a new license for such software, you may create and use a modified
+ version of this License if you rename the license and remove any
+ references to the name of the license steward (except to note that such
+ modified license differs from this License).
+
+ 10.4. Distributing Source Code Form that is Incompatible With Secondary
+ Licenses
+
+ If You choose to distribute Source Code Form that is Incompatible With
+ Secondary Licenses under the terms of this version of the License, the
+ notice described in Exhibit B of this License must be attached. Exhibit A
+ - Source Code Form License Notice
+
+This Source Code Form is subject to the terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not distributed with this file, You can obtain
+one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file, then
+You may include the notice in a location (such as a LICENSE file in a relevant
+directory) where a recipient would be likely to look for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+
+This Source Code Form is "Incompatible With Secondary Licenses", as defined by
+the Mozilla Public License, v. 2.0.
+
+------
+
+** Bullet Continuous Collision Detection and Physics Library; version 3.07 --
+http://continuousphysics.com/Bullet/
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/
+** SDL; version 2.0.12 -- https://www.libsdl.org
+Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+** zlib; version 1.2.11 -- https://zlib.net
+Copyright (C) 1995-2017 Jean-loup Gailly
+
+zlib License Copyright (c) <year> <copyright holders>
+
+This software is provided 'as-is', without any express or implied warranty. In
+no event will the authors be held liable for any damages arising from the use
+of this software.
+
+Permission is granted to anyone to use this software for any purpose, including
+commercial applications, and to alter it and redistribute it freely, subject to
+the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software in a
+ product, an acknowledgment in the product documentation would be appreciated
+ but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source distribution.
+
+------
+
+** LibTIFF; version 4.1.0 -- http://www.libtiff.org/
+Copyright (c) 1988-1997 Sam Leffler
+Copyright (c) 1991-1997 Silicon Graphics, Inc.
+
+Copyright (c) 1988-1997 Sam Leffler
+
+Copyright (c) 1991-1997 Silicon Graphics, Inc.
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that (i)
+the above copyright notices and this permission notice appear in all copies of
+the software and related documentation, and (ii) the names of Sam Leffler and
+Silicon Graphics may not be used in any advertising or publicity relating to
+the software without the specific, prior written permission of Sam Leffler and
+Silicon Graphics.
+
+THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS,
+IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
+MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+
+IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR ANY SPECIAL,
+INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED
+OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+------
+
+** The LLVM Compiler Infrastructure; version 9.0.1 --
+https://github.com/llvm/llvm-project/
+University of Illinois/NCSA
+Open Source License
+
+Copyright (c) 2003-2019 University of Illinois at Urbana-Champaign.
+All rights reserved.
+
+---- LLVM Exceptions to the Apache 2.0 License ----
+
+As an exception, if, as a result of your compiling your source code, portions
+of this Software are embedded into an Object form of such source code, you
+may redistribute such embedded portions in such Object form without complying
+with the conditions of Sections 4(a), 4(b) and 4(d) of the License.
+
+In addition, if you combine or link compiled forms of this Software with
+software that is licensed under the GPLv2 ("Combined Software") and if a
+court of competent jurisdiction determines that the patent provision (Section
+3), the indemnity provision (Section 9) or other Section of the License
+conflicts with the conditions of the GPLv2, you may retroactively and
+prospectively choose to deem waived or otherwise exclude such Section(s) of
+the License, but only in their entirety and only with respect to the Combined
+Software.
+
+------
+
+** OpenSubdiv; version 3.4.3 -- http://graphics.pixar.com/opensubdiv
+Copyright 2013 Pixar
+** Universal Scene Description; version 20.05 -- http://www.openusd.org/
+Copyright 2016 Pixar
+
+Licensed under the Apache License, Version 2.0 (the "Apache License") with the
+following modification; you may not use this file except in compliance with the
+Apache License and the following modification to it:
+
+Section 6. Trademarks. is deleted and replaced with:
+
+6. Trademarks. This License does not grant permission to use the trade names,
+trademarks, service marks, or product names of the Licensor and its affiliates,
+except as required to comply with Section 4(c) of the License and to reproduce
+the content of the NOTICE file.
+
+------
+
+** libjpeg-turbo; version 2.0.4 --
+https://github.com/libjpeg-turbo/libjpeg-turbo/
+Copyright (C)2009-2020 D. R. Commander. All Rights Reserved.
+Copyright (C)2015 Viktor Szathmáry. All Rights Reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this
+list of conditions and the following disclaimer.
+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.
+Neither the name of the libjpeg-turbo Project nor the names of its contributors
+may be used to endorse or promote products derived from this software without
+specific prior written permission.
+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 HOLDERS 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.
+
+------
+
+** Boost C++ Libraries; version 1.70.0 -- https://www.boost.org/
+-
+
+Boost Software License - Version 1.0 - August 17th, 2003
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+------
+
+** Alembic; version 1.7.12 -- https://github.com/alembic/alembic
+TM & © 2009-2015 Lucasfilm Entertainment Company Ltd. or Lucasfilm Ltd.
+All rights reserved.
+
+Industrial Light & Magic, ILM and the Bulb and Gear design logo are all
+registered trademarks or service marks of Lucasfilm Ltd.
+
+© 2009-2015 Sony Pictures Imageworks Inc. All rights reserved.
+
+TM & © 2009-2015 Lucasfilm Entertainment Company Ltd. or Lucasfilm Ltd.
+All rights reserved.
+
+Industrial Light & Magic, ILM and the Bulb and Gear design logo are all
+registered trademarks or service marks of Lucasfilm Ltd.
+
+© 2009-2015 Sony Pictures Imageworks Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+* Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+* 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.
+* Neither the name of Industrial Light & Magic nor the names of
+its contributors may be used to endorse or promote products derived
+from this software without specific prior written permission.
+
+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
+OWNER 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.
+
+
+-------------------------------------------------------------------------------
+
+ALEMBIC ATTACHMENT A —
+REQUIRED NOTICES FOR DISTRIBUTION
+
+The Alembic Software is distributed along with certain third party
+components licensed under various open source software licenses ("Open
+Source Components"). In addition to the warranty disclaimers contained
+in the open source licenses found below, Industrial Light & Magic, a
+division of Lucasfilm Entertainment Company Ltd. ("ILM") makes the
+following disclaimers regarding the Open Source Components on behalf of
+itself, the copyright holders, contributors, and licensors of such Open
+Source Components:
+
+TO THE FULLEST EXTENT PERMITTED UNDER APPLICABLE LAW, THE OPEN SOURCE
+COMPONENTS ARE PROVIDED BY THE COPYRIGHT HOLDERS, CONTRIBUTORS,
+LICENSORS, AND ILM "AS IS" AND ANY REPRESENTATIONS OR WARRANTIES OF ANY
+KIND, WHETHER ORAL OR WRITTEN, WHETHER EXPRESS, IMPLIED, OR ARISING BY
+STATUTE, CUSTOM, COURSE OF DEALING, OR TRADE USAGE, INCLUDING WITHOUT
+LIMITATION THE IMPLIED WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR
+A PARTICULAR PURPOSE, AND NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT
+WILL THE COPYRIGHT OWNER, CONTRIBUTORS, LICENSORS, OR ILM AND/OR ITS
+AFFILIATES 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 THE OPEN
+SOURCE COMPONENTS, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Boost C++ Libraries
+------------------------------------------------------------------------
+
+Boost Software License – Version 1.0 August 17th, 2003 Permission is
+hereby granted, free of charge, to any person or organization obtaining
+a copy of the software and accompanying documentation covered by this
+license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of
+the Software, and to permit third-parties to whom the Software is
+furnished to do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement,
+including the above license grant, this restriction and the following
+disclaimer, must be included in all copies of the Software, in whole or
+in part, and all derivative works of the Software, unless such copies or
+derivative works are solely in the form of machine-executable object
+code generated by a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
+NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR ANYONE
+DISTRIBUTING THE SOFTWARE BE LIABLE FOR ANY DAMAGES OR OTHER LIABILITY,
+WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+------
+
+** WC Width; version 2007-05-26 -- http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
+Markus Kuhn -- 2007-05-26 (Unicode 5.0)
+
+Permission to use, copy, modify, and distribute this software
+for any purpose and without fee is hereby granted. The author
+disclaims all warranties with regard to this software.
+
+------
+
+** Python; version 3.7.7 -- https://www.python.org
+Copyright (c) 2001-2020 Python Software Foundation. All rights reserved.
+
+A. HISTORY OF THE SOFTWARE
+==========================
+
+Python was created in the early 1990s by Guido van Rossum at Stichting
+Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
+as a successor of a language called ABC. Guido remains Python's
+principal author, although it includes many contributions from others.
+
+In 1995, Guido continued his work on Python at the Corporation for
+National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
+in Reston, Virginia where he released several versions of the
+software.
+
+In May 2000, Guido and the Python core development team moved to
+BeOpen.com to form the BeOpen PythonLabs team. In October of the same
+year, the PythonLabs team moved to Digital Creations, which became
+Zope Corporation. In 2001, the Python Software Foundation (PSF, see
+https://www.python.org/psf/) was formed, a non-profit organization
+created specifically to own Python-related Intellectual Property.
+Zope Corporation was a sponsoring member of the PSF.
+
+All Python releases are Open Source (see http://www.opensource.org for
+the Open Source Definition). Historically, most, but not all, Python
+releases have also been GPL-compatible; the table below summarizes
+the various releases.
+
+ Release Derived Year Owner GPL-
+ from compatible? (1)
+
+ 0.9.0 thru 1.2 1991-1995 CWI yes
+ 1.3 thru 1.5.2 1.2 1995-1999 CNRI yes
+ 1.6 1.5.2 2000 CNRI no
+ 2.0 1.6 2000 BeOpen.com no
+ 1.6.1 1.6 2001 CNRI yes (2)
+ 2.1 2.0+1.6.1 2001 PSF no
+ 2.0.1 2.0+1.6.1 2001 PSF yes
+ 2.1.1 2.1+2.0.1 2001 PSF yes
+ 2.1.2 2.1.1 2002 PSF yes
+ 2.1.3 2.1.2 2002 PSF yes
+ 2.2 and above 2.1.1 2001-now PSF yes
+
+Footnotes:
+
+(1) GPL-compatible doesn't mean that we're distributing Python under
+ the GPL. All Python licenses, unlike the GPL, let you distribute
+ a modified version without making your changes open source. The
+ GPL-compatible licenses make it possible to combine Python with
+ other software that is released under the GPL; the others don't.
+
+(2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
+ because its license has a choice of law clause. According to
+ CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
+ is "not incompatible" with the GPL.
+
+Thanks to the many outside volunteers who have worked under Guido's
+direction to make these releases possible.
+
+
+B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
+===============================================================
+
+Python software and documentation are licensed under the
+Python Software Foundation License Version 2.
+
+Starting with Python 3.8.6, examples, recipes, and other code in
+the documentation are dual licensed under the PSF License Version 2
+and the Zero-Clause BSD license.
+
+Some software incorporated into Python is under different licenses.
+The licenses are listed with code falling under that license.
+
+
+PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+--------------------------------------------
+
+1. This LICENSE AGREEMENT is between the Python Software Foundation
+("PSF"), and the Individual or Organization ("Licensee") accessing and
+otherwise using this software ("Python") in source or binary form and
+its associated documentation.
+
+2. Subject to the terms and conditions of this License Agreement, PSF hereby
+grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
+analyze, test, perform and/or display publicly, prepare derivative works,
+distribute, and otherwise use Python alone or in any derivative version,
+provided, however, that PSF's License Agreement and PSF's notice of copyright,
+i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+2010,
+2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Python Software
+Foundation;
+All Rights Reserved" are retained in Python alone or in any derivative version
+prepared by Licensee.
+
+3. In the event Licensee prepares a derivative work that is based on
+or incorporates Python or any part thereof, and wants to make
+the derivative work available to others as provided herein, then
+Licensee hereby agrees to include in any such work a brief summary of
+the changes made to Python.
+
+4. PSF is making Python available to Licensee on an "AS IS"
+basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
+IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
+DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
+FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
+INFRINGE ANY THIRD PARTY RIGHTS.
+
+5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
+FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
+A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
+OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
+
+6. This License Agreement will automatically terminate upon a material
+breach of its terms and conditions.
+
+7. Nothing in this License Agreement shall be deemed to create any
+relationship of agency, partnership, or joint venture between PSF and
+Licensee. This License Agreement does not grant permission to use PSF
+trademarks or trade name in a trademark sense to endorse or promote
+products or services of Licensee, or any third party.
+
+8. By copying, installing or otherwise using Python, Licensee
+agrees to be bound by the terms and conditions of this License
+Agreement.
+
+
+BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
+-------------------------------------------
+
+BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
+
+1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
+office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
+Individual or Organization ("Licensee") accessing and otherwise using
+this software in source or binary form and its associated
+documentation ("the Software").
+
+2. Subject to the terms and conditions of this BeOpen Python License
+Agreement, BeOpen hereby grants Licensee a non-exclusive,
+royalty-free, world-wide license to reproduce, analyze, test, perform
+and/or display publicly, prepare derivative works, distribute, and
+otherwise use the Software alone or in any derivative version,
+provided, however, that the BeOpen Python License is retained in the
+Software, alone or in any derivative version prepared by Licensee.
+
+3. BeOpen is making the Software available to Licensee on an "AS IS"
+basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
+IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
+DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
+FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
+INFRINGE ANY THIRD PARTY RIGHTS.
+
+4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
+SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
+AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
+DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
+
+5. This License Agreement will automatically terminate upon a material
+breach of its terms and conditions.
+
+6. This License Agreement shall be governed by and interpreted in all
+respects by the law of the State of California, excluding conflict of
+law provisions. Nothing in this License Agreement shall be deemed to
+create any relationship of agency, partnership, or joint venture
+between BeOpen and Licensee. This License Agreement does not grant
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+sense to endorse or promote products or services of Licensee, or any
+third party. As an exception, the "BeOpen Python" logos available at
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+permissions granted on that web page.
+
+7. By copying, installing or otherwise using the software, Licensee
+agrees to be bound by the terms and conditions of this License
+Agreement.
+
+
+CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
+---------------------------------------
+
+1. This LICENSE AGREEMENT is between the Corporation for National
+Research Initiatives, having an office at 1895 Preston White Drive,
+Reston, VA 20191 ("CNRI"), and the Individual or Organization
+("Licensee") accessing and otherwise using Python 1.6.1 software in
+source or binary form and its associated documentation.
+
+2. Subject to the terms and conditions of this License Agreement, CNRI
+hereby grants Licensee a nonexclusive, royalty-free, world-wide
+license to reproduce, analyze, test, perform and/or display publicly,
+prepare derivative works, distribute, and otherwise use Python 1.6.1
+alone or in any derivative version, provided, however, that CNRI's
+License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
+1995-2001 Corporation for National Research Initiatives; All Rights
+Reserved" are retained in Python 1.6.1 alone or in any derivative
+version prepared by Licensee. Alternately, in lieu of CNRI's License
+Agreement, Licensee may substitute the following text (omitting the
+quotes): "Python 1.6.1 is made available subject to the terms and
+conditions in CNRI's License Agreement. This Agreement together with
+Python 1.6.1 may be located on the Internet using the following
+unique, persistent identifier (known as a handle): 1895.22/1013. This
+Agreement may also be obtained from a proxy server on the Internet
+using the following URL: http://hdl.handle.net/1895.22/1013".
+
+3. In the event Licensee prepares a derivative work that is based on
+or incorporates Python 1.6.1 or any part thereof, and wants to make
+the derivative work available to others as provided herein, then
+Licensee hereby agrees to include in any such work a brief summary of
+the changes made to Python 1.6.1.
+
+4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
+basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
+IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
+DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
+FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
+INFRINGE ANY THIRD PARTY RIGHTS.
+
+5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
+1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
+A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
+OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
+
+6. This License Agreement will automatically terminate upon a material
+breach of its terms and conditions.
+
+7. This License Agreement shall be governed by the federal
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+limitation the federal copyright law, and, to the extent such
+U.S. federal law does not apply, by the law of the Commonwealth of
+Virginia, excluding Virginia's conflict of law provisions.
+Notwithstanding the foregoing, with regard to derivative works based
+on Python 1.6.1 that incorporate non-separable material that was
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+law of the Commonwealth of Virginia shall govern this License
+Agreement only as to issues arising under or with respect to
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+trade name in a trademark sense to endorse or promote products or
+services of Licensee, or any third party.
+
+8. By clicking on the "ACCEPT" button where indicated, or by copying,
+installing or otherwise using Python 1.6.1, Licensee agrees to be
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+
+ ACCEPT
+
+
+CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
+--------------------------------------------------
+
+Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
+The Netherlands. All rights reserved.
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON DOCUMENTATION
+----------------------------------------------------------------------
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+------
+
+** Jemalloc; version 5.2.1 -- https://github.com/jemalloc/jemalloc
+Copyright (C) 2002-present Jason Evans <jasone@canonware.com>.
+All rights reserved.
+Copyright (C) 2007-2012 Mozilla Foundation. All rights reserved.
+Copyright (C) 2009-present Facebook, Inc. 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(s),
+ this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice(s),
+ 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 HOLDER(S) ``AS IS'' AND ANY EXPRESS
+OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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+EVENT SHALL THE COPYRIGHT HOLDER(S) 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.
+
+------
+
+** The OpenGL Extension Wrangler Library; version 2.0.0 --
+http://glew.sourceforge.net/
+Copyright (C) 2008-2015, Nigel Stewart <nigels[]users sourceforge net>
+Copyright (C) 2002-2008, Milan Ikits <milan ikits[]ieee org>
+Copyright (C) 2002-2008, Marcelo E. Magallon <mmagallo[]debian org>
+Copyright (C) 2002, Lev Povalahev
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+* 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.
+* The name of the author may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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+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.
+
+
+Mesa 3-D graphics library
+Version: 7.0
+
+Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+Copyright (c) 2007 The Khronos Group Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and/or associated documentation files (the
+"Materials"), to deal in the Materials without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Materials, and to
+permit persons to whom the Materials are furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Materials.
+
+THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. \ No newline at end of file