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  1. GNU GENERAL PUBLIC LICENSE
  2. Version 3, 29 June 2007
  3. Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
  4. Everyone is permitted to copy and distribute verbatim copies of this license
  5. document, but changing it is not allowed.
  6. Preamble
  7. The GNU General Public License is a free, copyleft license for software and
  8. other kinds of works.
  9. The licenses for most software and other practical works are designed to take
  10. away your freedom to share and change the works. By contrast, the GNU General
  11. Public License is intended to guarantee your freedom to share and change all
  12. versions of a program--to make sure it remains free software for all its users.
  13. We, the Free Software Foundation, use the GNU General Public License for most
  14. of our software; it applies also to any other work released this way by its
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  16. When we speak of free software, we are referring to freedom, not price. Our
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  55. 0. Definitions.
  56. "This License" refers to version 3 of the GNU General Public License.
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  113. The Corresponding Source for a work in source code form is that same work.
  114. 2. Basic Permissions.
  115. All rights granted under this License are granted for the term of copyright
  116. on the Program, and are irrevocable provided the stated conditions are met.
  117. This License explicitly affirms your unlimited permission to run the unmodified
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  122. You may make, run and propagate covered works that you do not convey, without
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  145. You may convey verbatim copies of the Program's source code as you receive
  146. it, in any medium, provided that you conspicuously and appropriately publish
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  152. may offer support or warranty protection for a fee.
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  154. You may convey a work based on the Program, or the modifications to produce
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  158. giving a relevant date.
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  160. this License and any conditions added under section 7. This requirement modifies
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  162. c) You must license the entire work, as a whole, under this License to anyone
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  175. and its resulting copyright are not used to limit the access or legal rights
  176. of the compilation's users beyond what the individual works permit. Inclusion
  177. of a covered work in an aggregate does not cause this License to apply to
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  179. 6. Conveying Non-Source Forms.
  180. You may convey a covered work in object code form under the terms of sections
  181. 4 and 5, provided that you also convey the machine-readable Corresponding
  182. Source under the terms of this License, in one of these ways:
  183. a) Convey the object code in, or embodied in, a physical product (including
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  185. on a durable physical medium customarily used for software interchange.
  186. b) Convey the object code in, or embodied in, a physical product (including
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  190. either (1) a copy of the Corresponding Source for all the software in the
  191. product that is covered by this License, on a durable physical medium customarily
  192. used for software interchange, for a price no more than your reasonable cost
  193. of physically performing this conveying of source, or (2) access to copy the
  194. Corresponding Source from a network server at no charge.
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  198. with such an offer, in accord with subsection 6b.
  199. d) Convey the object code by offering access from a designated place (gratis
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  202. require recipients to copy the Corresponding Source along with the object
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  204. Source may be on a different server (operated by you or a third party) that
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  209. e) Convey the object code using peer-to-peer transmission, provided you inform
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  212. A separable portion of the object code, whose source code is excluded from
  213. the Corresponding Source as a System Library, need not be included in conveying
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  215. A "User Product" is either (1) a "consumer product", which means any tangible
  216. personal property which is normally used for personal, family, or household
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  223. A product is a consumer product regardless of whether the product has substantial
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  238. does not apply if neither you nor any third party retains the ability to install
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  245. when the modification itself materially and adversely affects the operation
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  248. Corresponding Source conveyed, and Installation Information provided, in accord
  249. with this section must be in a format that is publicly documented (and with
  250. an implementation available to the public in source code form), and must require
  251. no special password or key for unpacking, reading or copying.
  252. 7. Additional Terms.
  253. "Additional permissions" are terms that supplement the terms of this License
  254. by making exceptions from one or more of its conditions. Additional permissions
  255. that are applicable to the entire Program shall be treated as though they
  256. were included in this License, to the extent that they are valid under applicable
  257. law. If additional permissions apply only to part of the Program, that part
  258. may be used separately under those permissions, but the entire Program remains
  259. governed by this License without regard to the additional permissions.
  260. When you convey a copy of a covered work, you may at your option remove any
  261. additional permissions from that copy, or from any part of it. (Additional
  262. permissions may be written to require their own removal in certain cases when
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  266. Notwithstanding any other provision of this License, for material you add
  267. to a covered work, you may (if authorized by the copyright holders of that
  268. material) supplement the terms of this License with terms:
  269. a) Disclaiming warranty or limiting liability differently from the terms of
  270. sections 15 and 16 of this License; or
  271. b) Requiring preservation of specified reasonable legal notices or author
  272. attributions in that material or in the Appropriate Legal Notices displayed
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  274. c) Prohibiting misrepresentation of the origin of that material, or requiring
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  281. f) Requiring indemnification of licensors and authors of that material by
  282. anyone who conveys the material (or modified versions of it) with contractual
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  285. All other non-permissive additional terms are considered "further restrictions"
  286. within the meaning of section 10. If the Program as you received it, or any
  287. part of it, contains a notice stating that it is governed by this License
  288. along with a term that is a further restriction, you may remove that term.
  289. If a license document contains a further restriction but permits relicensing
  290. or conveying under this License, you may add to a covered work material governed
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  293. If you add terms to a covered work in accord with this section, you must place,
  294. in the relevant source files, a statement of the additional terms that apply
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  296. Additional terms, permissive or non-permissive, may be stated in the form
  297. of a separately written license, or stated as exceptions; the above requirements
  298. apply either way.
  299. 8. Termination.
  300. You may not propagate or modify a covered work except as expressly provided
  301. under this License. Any attempt otherwise to propagate or modify it is void,
  302. and will automatically terminate your rights under this License (including
  303. any patent licenses granted under the third paragraph of section 11).
  304. However, if you cease all violation of this License, then your license from
  305. a particular copyright holder is reinstated (a) provisionally, unless and
  306. until the copyright holder explicitly and finally terminates your license,
  307. and (b) permanently, if the copyright holder fails to notify you of the violation
  308. by some reasonable means prior to 60 days after the cessation.
  309. Moreover, your license from a particular copyright holder is reinstated permanently
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  311. this is the first time you have received notice of violation of this License
  312. (for any work) from that copyright holder, and you cure the violation prior
  313. to 30 days after your receipt of the notice.
  314. Termination of your rights under this section does not terminate the licenses
  315. of parties who have received copies or rights from you under this License.
  316. If your rights have been terminated and not permanently reinstated, you do
  317. not qualify to receive new licenses for the same material under section 10.
  318. 9. Acceptance Not Required for Having Copies.
  319. You are not required to accept this License in order to receive or run a copy
  320. of the Program. Ancillary propagation of a covered work occurring solely as
  321. a consequence of using peer-to-peer transmission to receive a copy likewise
  322. does not require acceptance. However, nothing other than this License grants
  323. you permission to propagate or modify any covered work. These actions infringe
  324. copyright if you do not accept this License. Therefore, by modifying or propagating
  325. a covered work, you indicate your acceptance of this License to do so.
  326. 10. Automatic Licensing of Downstream Recipients.
  327. Each time you convey a covered work, the recipient automatically receives
  328. a license from the original licensors, to run, modify and propagate that work,
  329. subject to this License. You are not responsible for enforcing compliance
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  331. An "entity transaction" is a transaction transferring control of an organization,
  332. or substantially all assets of one, or subdividing an organization, or merging
  333. organizations. If propagation of a covered work results from an entity transaction,
  334. each party to that transaction who receives a copy of the work also receives
  335. whatever licenses to the work the party's predecessor in interest had or could
  336. give under the previous paragraph, plus a right to possession of the Corresponding
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  339. You may not impose any further restrictions on the exercise of the rights
  340. granted or affirmed under this License. For example, you may not impose a
  341. license fee, royalty, or other charge for exercise of rights granted under
  342. this License, and you may not initiate litigation (including a cross-claim
  343. or counterclaim in a lawsuit) alleging that any patent claim is infringed
  344. by making, using, selling, offering for sale, or importing the Program or
  345. any portion of it.
  346. 11. Patents.
  347. A "contributor" is a copyright holder who authorizes use under this License
  348. of the Program or a work on which the Program is based. The work thus licensed
  349. is called the contributor's "contributor version".
  350. A contributor's "essential patent claims" are all patent claims owned or controlled
  351. by the contributor, whether already acquired or hereafter acquired, that would
  352. be infringed by some manner, permitted by this License, of making, using,
  353. or selling its contributor version, but do not include claims that would be
  354. infringed only as a consequence of further modification of the contributor
  355. version. For purposes of this definition, "control" includes the right to
  356. grant patent sublicenses in a manner consistent with the requirements of this
  357. License.
  358. Each contributor grants you a non-exclusive, worldwide, royalty-free patent
  359. license under the contributor's essential patent claims, to make, use, sell,
  360. offer for sale, import and otherwise run, modify and propagate the contents
  361. of its contributor version.
  362. In the following three paragraphs, a "patent license" is any express agreement
  363. or commitment, however denominated, not to enforce a patent (such as an express
  364. permission to practice a patent or covenant not to sue for patent infringement).
  365. To "grant" such a patent license to a party means to make such an agreement
  366. or commitment not to enforce a patent against the party.
  367. If you convey a covered work, knowingly relying on a patent license, and the
  368. Corresponding Source of the work is not available for anyone to copy, free
  369. of charge and under the terms of this License, through a publicly available
  370. network server or other readily accessible means, then you must either (1)
  371. cause the Corresponding Source to be so available, or (2) arrange to deprive
  372. yourself of the benefit of the patent license for this particular work, or
  373. (3) arrange, in a manner consistent with the requirements of this License,
  374. to extend the patent license to downstream recipients. "Knowingly relying"
  375. means you have actual knowledge that, but for the patent license, your conveying
  376. the covered work in a country, or your recipient's use of the covered work
  377. in a country, would infringe one or more identifiable patents in that country
  378. that you have reason to believe are valid.
  379. If, pursuant to or in connection with a single transaction or arrangement,
  380. you convey, or propagate by procuring conveyance of, a covered work, and grant
  381. a patent license to some of the parties receiving the covered work authorizing
  382. them to use, propagate, modify or convey a specific copy of the covered work,
  383. then the patent license you grant is automatically extended to all recipients
  384. of the covered work and works based on it.
  385. A patent license is "discriminatory" if it does not include within the scope
  386. of its coverage, prohibits the exercise of, or is conditioned on the non-exercise
  387. of one or more of the rights that are specifically granted under this License.
  388. You may not convey a covered work if you are a party to an arrangement with
  389. a third party that is in the business of distributing software, under which
  390. you make payment to the third party based on the extent of your activity of
  391. conveying the work, and under which the third party grants, to any of the
  392. parties who would receive the covered work from you, a discriminatory patent
  393. license (a) in connection with copies of the covered work conveyed by you
  394. (or copies made from those copies), or (b) primarily for and in connection
  395. with specific products or compilations that contain the covered work, unless
  396. you entered into that arrangement, or that patent license was granted, prior
  397. to 28 March 2007.
  398. Nothing in this License shall be construed as excluding or limiting any implied
  399. license or other defenses to infringement that may otherwise be available
  400. to you under applicable patent law.
  401. 12. No Surrender of Others' Freedom.
  402. If conditions are imposed on you (whether by court order, agreement or otherwise)
  403. that contradict the conditions of this License, they do not excuse you from
  404. the conditions of this License. If you cannot convey a covered work so as
  405. to satisfy simultaneously your obligations under this License and any other
  406. pertinent obligations, then as a consequence you may not convey it at all.
  407. For example, if you agree to terms that obligate you to collect a royalty
  408. for further conveying from those to whom you convey the Program, the only
  409. way you could satisfy both those terms and this License would be to refrain
  410. entirely from conveying the Program.
  411. 13. Use with the GNU Affero General Public License.
  412. Notwithstanding any other provision of this License, you have permission to
  413. link or combine any covered work with a work licensed under version 3 of the
  414. GNU Affero General Public License into a single combined work, and to convey
  415. the resulting work. The terms of this License will continue to apply to the
  416. part which is the covered work, but the special requirements of the GNU Affero
  417. General Public License, section 13, concerning interaction through a network
  418. will apply to the combination as such.
  419. 14. Revised Versions of this License.
  420. The Free Software Foundation may publish revised and/or new versions of the
  421. GNU General Public License from time to time. Such new versions will be similar
  422. in spirit to the present version, but may differ in detail to address new
  423. problems or concerns.
  424. Each version is given a distinguishing version number. If the Program specifies
  425. that a certain numbered version of the GNU General Public License "or any
  426. later version" applies to it, you have the option of following the terms and
  427. conditions either of that numbered version or of any later version published
  428. by the Free Software Foundation. If the Program does not specify a version
  429. number of the GNU General Public License, you may choose any version ever
  430. published by the Free Software Foundation.
  431. If the Program specifies that a proxy can decide which future versions of
  432. the GNU General Public License can be used, that proxy's public statement
  433. of acceptance of a version permanently authorizes you to choose that version
  434. for the Program.
  435. Later license versions may give you additional or different permissions. However,
  436. no additional obligations are imposed on any author or copyright holder as
  437. a result of your choosing to follow a later version.
  438. 15. Disclaimer of Warranty.
  439. THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE
  440. LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
  441. OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
  442. EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  443. OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
  444. TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM
  445. PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
  446. CORRECTION.
  447. 16. Limitation of Liability.
  448. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL
  449. ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM
  450. AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
  451. INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO
  452. USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
  453. INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE
  454. PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
  455. PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
  456. 17. Interpretation of Sections 15 and 16.
  457. If the disclaimer of warranty and limitation of liability provided above cannot
  458. be given local legal effect according to their terms, reviewing courts shall
  459. apply local law that most closely approximates an absolute waiver of all civil
  460. liability in connection with the Program, unless a warranty or assumption
  461. of liability accompanies a copy of the Program in return for a fee. END OF
  462. TERMS AND CONDITIONS
  463. How to Apply These Terms to Your New Programs
  464. If you develop a new program, and you want it to be of the greatest possible
  465. use to the public, the best way to achieve this is to make it free software
  466. which everyone can redistribute and change under these terms.
  467. To do so, attach the following notices to the program. It is safest to attach
  468. them to the start of each source file to most effectively state the exclusion
  469. of warranty; and each file should have at least the "copyright" line and a
  470. pointer to where the full notice is found.
  471. <one line to give the program's name and a brief idea of what it does.>
  472. Copyright (C) <year> <name of author>
  473. This program is free software: you can redistribute it and/or modify it under
  474. the terms of the GNU General Public License as published by the Free Software
  475. Foundation, either version 3 of the License, or (at your option) any later
  476. version.
  477. This program is distributed in the hope that it will be useful, but WITHOUT
  478. ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  479. FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
  480. You should have received a copy of the GNU General Public License along with
  481. this program. If not, see <https://www.gnu.org/licenses/>.
  482. Also add information on how to contact you by electronic and paper mail.
  483. If the program does terminal interaction, make it output a short notice like
  484. this when it starts in an interactive mode:
  485. <program> Copyright (C) <year> <name of author>
  486. This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
  487. This is free software, and you are welcome to redistribute it under certain
  488. conditions; type `show c' for details.
  489. The hypothetical commands `show w' and `show c' should show the appropriate
  490. parts of the General Public License. Of course, your program's commands might
  491. be different; for a GUI interface, you would use an "about box".
  492. You should also get your employer (if you work as a programmer) or school,
  493. if any, to sign a "copyright disclaimer" for the program, if necessary. For
  494. more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
  495. The GNU General Public License does not permit incorporating your program
  496. into proprietary programs. If your program is a subroutine library, you may
  497. consider it more useful to permit linking proprietary applications with the
  498. library. If this is what you want to do, use the GNU Lesser General Public
  499. License instead of this License. But first, please read <https://www.gnu.org/
  500. licenses /why-not-lgpl.html>.