LICENSE.txt

GNU General Public License, version 3 (GPL-3.0)

GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of this license 
document, but changing it is not allowed.

Preamble
The GNU General Public License is a free, copyleft license for software and 
other kinds of works.

The licenses for most software and other practical works are designed to take 
away your freedom to share and change the works. By contrast, the GNU General 
Public License is intended to guarantee your freedom to share and change all 
versions of a program--to make sure it remains free software for all its users. 
We, the Free Software Foundation, use the GNU General Public License for most 
of our software; it applies also to any other work released this way by its 
authors. You can apply it to your programs, too.

When we speak of free software, we are referring to freedom, not price. Our 
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To protect your rights, we need to prevent others from denying you these rights 
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For example, if you distribute copies of such a program, whether gratis or for 
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Developers that use the GNU GPL protect your rights with two steps: (1) assert 
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render the program non-free.

The precise terms and conditions for copying, distribution and modification 
follow.

TERMS AND CONDITIONS
0. Definitions.
“This License” refers to version 3 of the GNU General Public License.

“Copyright” also means copyright-like laws that apply to other kinds of works, 
such as semiconductor masks.

“The Program” refers to any copyrightable work licensed under this License. 
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1. Source Code.
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The Corresponding Source for a work in source code form is that same work.

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All rights granted under this License are granted for the term of copyright on 
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7. Additional Terms.
“Additional permissions” are terms that supplement the terms of this License by 
making exceptions from one or more of its conditions. Additional permissions 
that are applicable to the entire Program shall be treated as though they were 
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law. If additional permissions apply only to part of the Program, that part may 
be used separately under those permissions, but the entire Program remains 
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Notwithstanding any other provision of this License, for material you add to a 
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a) Disclaiming warranty or limiting liability differently from the terms of 
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Termination of your rights under this section does not terminate the licenses 
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your rights have been terminated and not permanently reinstated, you do not 
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9. Acceptance Not Required for Having Copies.
You are not required to accept this License in order to receive or run a copy 
of the Program. Ancillary propagation of a covered work occurring solely as a 
consequence of using peer-to-peer transmission to receive a copy likewise does 
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so.

10. Automatic Licensing of Downstream Recipients.
Each time you convey a covered work, the recipient automatically receives a 
license from the original licensors, to run, modify and propagate that work, 
subject to this License. You are not responsible for enforcing compliance by 
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An “entity transaction” is a transaction transferring control of an 
organization, or substantially all assets of one, or subdividing an 
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You may not impose any further restrictions on the exercise of the rights 
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11. Patents.
A “contributor” is a copyright holder who authorizes use under this License of 
the Program or a work on which the Program is based. The work thus licensed is 
called the contributor's “contributor version”.

A contributor's “essential patent claims” are all patent claims owned or 
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Each contributor grants you a non-exclusive, worldwide, royalty-free patent 
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In the following three paragraphs, a “patent license” is any express agreement 
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If you convey a covered work, knowingly relying on a patent license, and the 
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cause the Corresponding Source to be so available, or (2) arrange to deprive 
yourself of the benefit of the patent license for this particular work, or (3) 
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You may not convey a covered work if you are a party to an arrangement with a 
third party that is in the business of distributing software, under which you 
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conveying the work, and under which the third party grants, to any of the 
parties who would receive the covered work from you, a discriminatory patent 
license (a) in connection with copies of the covered work conveyed by you (or 
copies made from those copies), or (b) primarily for and in connection with 
specific products or compilations that contain the covered work, unless you 
entered into that arrangement, or that patent license was granted, prior to 28 
March 2007.

Nothing in this License shall be construed as excluding or limiting any implied 
license or other defenses to infringement that may otherwise be available to 
you under applicable patent law.

12. No Surrender of Others' Freedom.
If 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 convey a covered work so 
as to satisfy simultaneously your obligations under this License and any other 
pertinent obligations, then as a consequence you may not convey it at all. For 
example, if you agree to terms that obligate you to collect a royalty for 
further conveying from those to whom you convey the Program, the only way you 
could satisfy both those terms and this License would be to refrain entirely 
from conveying the Program.

13. Use with the GNU Affero General Public License.
Notwithstanding any other provision of this License, you have permission to 
link or combine any covered work with a work licensed under version 3 of the 
GNU Affero General Public License into a single combined work, and to convey 
the resulting work. The terms of this License will continue to apply to the 
part which is the covered work, but the special requirements of the GNU Affero 
General Public License, section 13, concerning interaction through a network 
will apply to the combination as such.

14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of the GNU 
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 
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the Free Software Foundation. If the Program does not specify a version number 
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the Free Software Foundation.

If the Program specifies that a proxy can decide which future versions of the 
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Later license versions may give you additional or different permissions. 
However, no additional obligations are imposed on any author or copyright 
holder as a result of your choosing to follow a later version.

15. Disclaimer of Warranty.
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.

16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY 
COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 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.

17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided above cannot 
be given local legal effect according to their terms, reviewing courts shall 
apply local law that most closely approximates an absolute waiver of all civil 
liability in connection with the Program, unless a warranty or assumption of 
liability accompanies a copy of the Program in return for a fee.