LICENSE

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
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  program--to make sure it remains free software for all its users.
  We, the Free Software Foundation, use the GNU General Public
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  work released this way by its authors.  You can apply it to your
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  When we speak of free software, we are referring to freedom, not
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  To protect your rights, we need to prevent others from denying you
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  For example, if you distribute copies of such a program, whether
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  Developers that use the GNU GPL protect your rights with two
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  Some devices are designed to deny users access to install or run
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  Finally, every program is threatened constantly by software
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                       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
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  "The Program" refers to any copyrightable work licensed under this
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  A "covered work" means either the unmodified Program or a work
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  To "propagate" a work means to do anything with it that, without
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  An interactive user interface displays "Appropriate Legal Notices"
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  1. Source Code.

  The "source code" for a work means the preferred form of the work
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  The Corresponding Source need not include anything that users can
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  The Corresponding Source for a work in source code form is that
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  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
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  You may make, run and propagate covered works that you do not
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  You may convey verbatim copies of the Program's source code as you
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  You may charge any price or no price for each copy that you
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  5. Conveying Modified Source Versions.

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    b) The work must carry prominent notices stating that it is
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    c) You must license the entire work, as a whole, under this
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    d) If the work has interactive user interfaces, each must
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  A compilation of a covered work with other separate and
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  You may convey a covered work in object code form under the terms
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    b) Convey the object code in, or embodied in, a physical product
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    d) Convey the object code by offering access from a designated
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    e) Convey the object code using peer-to-peer transmission,
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  A separable portion of the object code, whose source code is
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  A "User Product" is either (1) a "consumer product", which means
  any tangible personal property which is normally used for
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  "Installation Information" for a User Product means any methods,
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  If you convey an object code work under this section in, or with,
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  section must be accompanied by the Installation Information.  But
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  retains the ability to install modified object code on the User
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  The requirement to provide Installation Information does not
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  Corresponding Source conveyed, and Installation Information
  provided, in accord with this section must be in a format that is
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  public in source code form), and must require no special password
  or key for unpacking, reading or copying.

  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 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
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  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
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  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 containing it; or

    c) Prohibiting misrepresentation of the origin of that material,
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    f) Requiring indemnification of licensors and authors of that
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  All other non-permissive additional terms are considered "further
  restrictions" 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 along with a term that is a further
  restriction, you may remove that term.  If a license document
  contains a further restriction but permits relicensing or
  conveying under this License, you may add to a covered work
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  that the further restriction does not survive such relicensing or
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  If you add terms to a covered work in accord with this section,
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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
  License.

  An "entity transaction" is a transaction transferring control of
  an organization, or substantially all assets of one, or
  subdividing an organization, or merging organizations.  If
  propagation of a covered work results from an entity transaction,
  each party to that transaction who receives a copy of the work
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  predecessor in interest had or could give under the previous
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  of the work from the predecessor in interest, if the predecessor
  has it or can get it with reasonable efforts.

  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 "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 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, "control"
  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
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  contributor version.

  In the following three paragraphs, a "patent license" is any
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  enforce a patent (such as an express permission to practice a
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  "grant" 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
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  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.  "Knowingly relying" 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 "discriminatory" 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
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  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 "or any later version" 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.

  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.

                     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 state 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 a brief idea of what it does.}
    Copyright (C) {year}  {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 3 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, see
    <http://www.gnu.org/licenses/>.

Also add information on how to contact you by electronic and paper
mail.

  If the program does terminal interaction, make it output a short
  notice like this when it starts in an interactive mode:

    {project}  Copyright (C) {year}  {fullname}
    This program 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, your
program's commands might be different; for a GUI interface, you
would use an "about box".

  You should also get your employer (if you work as a programmer) or
  school, if any, to sign a "copyright disclaimer" for the program,
  if necessary. For more information on this, and how to apply and
  follow the GNU GPL, see <http://www.gnu.org/licenses/>.

  The GNU 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.  But first, please read
  <http://www.gnu.org/philosophy/why-not-lgpl.html>.