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+Version 3, 29 June 2007
+Copyright &copy; 2007 Free Software Foundation, Inc. &lt;<>&gt;
+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 General
+Public Licenses are designed to make sure that you have the freedom to distribute
+copies of free software (and charge for them 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 prevent others from denying you these rights or
+asking you to surrender the rights. Therefore, you have certain responsibilities if
+you distribute copies of the software, or if you modify it: responsibilities to
+respect the freedom of others.
+For example, if you distribute copies of such a program, whether gratis or for a fee,
+you must pass on to the recipients the same freedoms that you received. You must make
+sure that they, too, receive or can get the source code. And you must show them these
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+Developers that use the GNU GPL protect your rights with two steps: (1) assert
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+to copy, distribute and/or modify it.
+For the developers' and authors' protection, the GPL clearly explains that there is
+no warranty for this free software. For both users' and authors' sake, the GPL
+requires that modified versions be marked as changed, so that their problems will not
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+Some devices are designed to deny users access to install or run modified versions of
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+incompatible with the aim of protecting users' freedom to change the software. The
+systematic pattern of such abuse occurs in the area of products for individuals to
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+The precise terms and conditions for copying, distribution and modification follow.
+### 0. Definitions.
+&ldquo;This License&rdquo; refers to version 3 of the GNU General Public License.
+&ldquo;Copyright&rdquo; also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+&ldquo;The Program&rdquo; refers to any copyrightable work licensed under this
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+To &ldquo;modify&rdquo; a work means to copy from or adapt all or part of the work in
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+resulting work is called a &ldquo;modified version&rdquo; of the earlier work or a
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+A &ldquo;covered work&rdquo; means either the unmodified Program or a work based on
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+To &ldquo;propagate&rdquo; a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for infringement under
+applicable copyright law, except executing it on a computer or modifying a private
+copy. Propagation includes copying, distribution (with or without modification),
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+To &ldquo;convey&rdquo; a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user through a computer
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+An interactive user interface displays &ldquo;Appropriate Legal Notices&rdquo; to the
+extent that it includes a convenient and prominently visible feature that (1)
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+licensees may convey the work under this License, and how to view a copy of this
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+### 1. Source Code.
+The &ldquo;source code&rdquo; for a work means the preferred form of the work for
+making modifications to it. &ldquo;Object code&rdquo; means any non-source form of a
+A &ldquo;Standard Interface&rdquo; means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of interfaces
+specified for a particular programming language, one that is widely used among
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+The &ldquo;System Libraries&rdquo; of an executable work include anything, other than
+the work as a whole, that (a) is included in the normal form of packaging a Major
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+A &ldquo;Major Component&rdquo;, in this context, means a major essential component
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+The &ldquo;Corresponding Source&rdquo; for a work in object code form means all the
+source code needed to generate, install, and (for an executable work) run the object
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+the source code for shared libraries and dynamically linked subprograms that the work
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+control flow between those subprograms and other parts of the work.
+The Corresponding Source need not include anything that users can regenerate
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+The Corresponding Source for a work in source code form is that same work.
+### 2. Basic Permissions.
+All rights granted under this License are granted for the term of copyright on the
+Program, and are irrevocable provided the stated conditions are met. This License
+explicitly affirms your unlimited permission to run the unmodified Program. The
+output from running a covered work is covered by this License only if the output,
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+of fair use or other equivalent, as provided by copyright law.
+You may make, run and propagate covered works that you do not convey, without
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+works to others for the sole purpose of having them make modifications exclusively
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+Conveying under any other circumstances is permitted solely under the conditions
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+### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+No covered work shall be deemed part of an effective technological measure under any
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+adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention
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+When you convey a covered work, you waive any legal power to forbid circumvention of
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+intention to limit operation or modification of the work as a means of enforcing,
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+of technological measures.
+### 4. Conveying Verbatim Copies.
+You may convey 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; keep intact all notices stating that this License and
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+intact all notices of the absence of any warranty; and give all recipients a copy of
+this License along with the Program.
+You may charge any price or no price for each copy that you convey, and you may offer
+support or warranty protection for a fee.
+### 5. Conveying Modified Source Versions.
+You may convey a work based on the Program, or the modifications to produce it from
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+* b) The work must carry prominent notices stating that it is released under this
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+requirement in section 4 to &ldquo;keep intact all notices&rdquo;.
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+* d) If the work has interactive user interfaces, each must display Appropriate Legal
+Notices; however, if the Program has interactive interfaces that do not display
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+A compilation of a covered work with other separate and independent works, which are
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+medium, is called an &ldquo;aggregate&rdquo; if the compilation and its resulting
+copyright are not used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work in an aggregate
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+### 6. Conveying Non-Source Forms.
+You may convey a covered work in object code form under the terms of sections 4 and
+5, provided that you also convey the machine-readable Corresponding Source under the
+terms of this License, in one of these ways:
+* a) Convey the object code in, or embodied in, a physical product (including a
+physical distribution medium), accompanied by the Corresponding Source fixed on a
+durable physical medium customarily used for software interchange.
+* b) Convey the object code in, or embodied in, a physical product (including a
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+three years and valid for as long as you offer spare parts or customer support for
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+License, on a durable physical medium customarily used for software interchange, for
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+* c) Convey individual copies of the object code with a copy of the written offer to
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+* d) Convey the object code by offering access from a designated place (gratis or for
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+A separable portion of the object code, whose source code is excluded from the
+Corresponding Source as a System Library, need not be included in conveying the
+object code work.
+A &ldquo;User Product&rdquo; is either (1) a &ldquo;consumer product&rdquo;, which
+means any tangible personal property which is normally used for personal, family, or
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+&ldquo;Installation Information&rdquo; for a User Product means any methods,
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+If you convey an object code work under this section in, or with, or specifically for
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+neither you nor any third party retains the ability to install modified object code
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+this section must be in a format that is publicly documented (and with an
+implementation available to the public in source code form), and must require no
+special password or key for unpacking, reading or copying.
+### 7. Additional Terms.
+&ldquo;Additional permissions&rdquo; 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 included in this License, to the extent that they are valid under applicable
+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 governed by
+this License without regard to the additional permissions.
+When you convey a copy of a covered work, you may at your option remove any
+additional permissions from that copy, or from any part of it. (Additional
+permissions may be written to require their own removal in certain cases when you
+modify the work.) You may place additional permissions on material, added by you to a
+covered work, for which you have or can give appropriate copyright permission.
+Notwithstanding any other provision of this License, for material you add to a
+covered work, you may (if authorized by the copyright holders of that material)
+supplement the terms of this License with terms:
+* a) Disclaiming warranty or limiting liability differently from the terms of
+sections 15 and 16 of this License; or
+* b) Requiring preservation of specified reasonable legal notices or author
+attributions in that material or in the Appropriate Legal Notices displayed by works
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+* c) Prohibiting misrepresentation of the origin of that material, or requiring that
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+who conveys the material (or modified versions of it) with contractual assumptions of
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+All other non-permissive additional terms are considered &ldquo;further
+restrictions&rdquo; within the meaning of section 10. If the Program as you received
+it, or any part of it, contains a notice stating that it is governed by this License
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+license document contains a further restriction but permits relicensing or conveying
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+If you add terms to a covered work in accord with this section, you must place, in
+the relevant source files, a statement of the additional terms that apply to those
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+Additional terms, permissive or non-permissive, may be stated in the form of a
+separately written license, or stated as exceptions; the above requirements apply
+either way.
+### 8. Termination.
+You may not propagate or modify a covered work except as expressly provided under
+this License. Any attempt otherwise to propagate or modify it is void, and will
+automatically terminate your rights under this License (including any patent licenses
+granted under the third paragraph of section 11).
+However, if you cease all violation of this License, then your license from a
+particular copyright holder is reinstated (a) provisionally, unless and until the
+copyright holder explicitly and finally terminates your license, and (b) permanently,
+if the copyright holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+Moreover, your license from a particular copyright holder is reinstated permanently
+if the copyright holder notifies you of the violation by some reasonable means, this
+is the first time you have received notice of violation of this License (for any
+work) from that copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+Termination of your rights under this section does not terminate the licenses of
+parties who have received copies or rights from you under this License. If your
+rights have been terminated and not permanently reinstated, you do not qualify to
+receive new licenses for the same material under section 10.
+### 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 not require
+acceptance. However, nothing other than this License grants you permission to
+propagate or modify any covered work. These actions infringe copyright if you do not
+accept this License. Therefore, by modifying or propagating a covered work, you
+indicate your acceptance of this License to do 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 third parties with this
+An &ldquo;entity transaction&rdquo; is a transaction transferring control of an
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+merging organizations. If propagation of a covered work results from an entity
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+Corresponding Source of the work from the predecessor in interest, if the predecessor
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+You may not impose any further restrictions on the exercise of the rights granted or
+affirmed under this License. For example, you may not impose a license fee, royalty,
+or other charge for exercise of rights granted under this License, and you may not
+initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging
+that any patent claim is infringed by making, using, selling, offering for sale, or
+importing the Program or any portion of it.
+### 11. Patents.
+A &ldquo;contributor&rdquo; 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 &ldquo;contributor version&rdquo;.
+A contributor's &ldquo;essential patent claims&rdquo; are all patent claims owned or
+controlled by the contributor, whether already acquired or hereafter acquired, that
+would be infringed by some manner, permitted by this License, of making, using, or
+selling its contributor version, but do not include claims that would be infringed
+only as a consequence of further modification of the contributor version. For
+purposes of this definition, &ldquo;control&rdquo; includes the right to grant patent
+sublicenses in a manner consistent with the requirements of this License.
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license
+under the contributor's essential patent claims, to make, use, sell, offer for sale,
+import and otherwise run, modify and propagate the contents of its contributor
+In the following three paragraphs, a &ldquo;patent license&rdquo; is any express
+agreement or commitment, however denominated, not to enforce a patent (such as an
+express permission to practice a patent or covenant not to sue for patent
+infringement). To &ldquo;grant&rdquo; such a patent license to a party means to make
+such an agreement or commitment not to enforce a patent against the party.
+If you convey a covered work, knowingly relying on a patent license, and the
+Corresponding Source of the work is not available for anyone to copy, free of charge
+and under the terms of this License, through a publicly available network server or
+other readily accessible means, then you must either (1) 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) arrange, in a manner consistent with
+the requirements of this License, to extend the patent license to downstream
+recipients. &ldquo;Knowingly relying&rdquo; means you have actual knowledge that, but
+for the patent license, your conveying the covered work in a country, or your
+recipient's use of the covered work in a country, would infringe one or more
+identifiable patents in that country that you have reason to believe are valid.
+If, pursuant to or in connection with a single transaction or arrangement, you
+convey, or propagate by procuring conveyance of, a covered work, and grant a patent
+license to some of the parties receiving the covered work authorizing them to use,
+propagate, modify or convey a specific copy of the covered work, then the patent
+license you grant is automatically extended to all recipients of the covered work and
+works based on it.
+A patent license is &ldquo;discriminatory&rdquo; if it does not include within the
+scope of its coverage, prohibits the exercise of, or is conditioned on the
+non-exercise of one or more of the rights that are specifically granted under this
+License. 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 make
+payment to the third party based on the extent of your activity of 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 that
+a certain numbered version of the GNU General Public License &ldquo;or any later
+version&rdquo; applies to it, you have the option of following the terms and
+conditions either of that numbered version or of any later version published by the
+Free Software Foundation. If the Program does not specify a version number of the GNU
+General Public License, you may choose any version ever published by the Free
+Software Foundation.
+If the Program specifies that a proxy can decide which future versions of the GNU
+General Public License can be used, that proxy's public statement of acceptance of a
+version permanently authorizes you to choose that version for the Program.
+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.
+### 16. Limitation of Liability.
+### 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
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