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   1  GNU GENERAL PUBLIC LICENSE
   2  ==========================
   3  
   4  Version 3, 29 June 2007
   5  
   6  Copyright &copy; 2007 Free Software Foundation, Inc. &lt;<http://fsf.org/>&gt;
   7  
   8  Everyone is permitted to copy and distribute verbatim copies of this license
   9  document, but changing it is not allowed.
  10  
  11  ## Preamble
  12  
  13  The GNU General Public License is a free, copyleft license for software and other
  14  kinds of works.
  15  
  16  The licenses for most software and other practical works are designed to take away
  17  your freedom to share and change the works. By contrast, the GNU General Public
  18  License is intended to guarantee your freedom to share and change all versions of a
  19  program--to make sure it remains free software for all its users. We, the Free
  20  Software Foundation, use the GNU General Public License for most of our software; it
  21  applies also to any other work released this way by its authors. You can apply it to
  22  your programs, too.
  23  
  24  When we speak of free software, we are referring to freedom, not price. Our General
  25  Public Licenses are designed to make sure that you have the freedom to distribute
  26  copies of free software (and charge for them if you wish), that you receive source
  27  code or can get it if you want it, that you can change the software or use pieces of
  28  it in new free programs, and that you know you can do these things.
  29  
  30  To protect your rights, we need to prevent others from denying you these rights or
  31  asking you to surrender the rights. Therefore, you have certain responsibilities if
  32  you distribute copies of the software, or if you modify it: responsibilities to
  33  respect the freedom of others.
  34  
  35  For example, if you distribute copies of such a program, whether gratis or for a fee,
  36  you must pass on to the recipients the same freedoms that you received. You must make
  37  sure that they, too, receive or can get the source code. And you must show them these
  38  terms so they know their rights.
  39  
  40  Developers that use the GNU GPL protect your rights with two steps: (1) assert
  41  copyright on the software, and (2) offer you this License giving you legal permission
  42  to copy, distribute and/or modify it.
  43  
  44  For the developers' and authors' protection, the GPL clearly explains that there is
  45  no warranty for this free software. For both users' and authors' sake, the GPL
  46  requires that modified versions be marked as changed, so that their problems will not
  47  be attributed erroneously to authors of previous versions.
  48  
  49  Some devices are designed to deny users access to install or run modified versions of
  50  the software inside them, although the manufacturer can do so. This is fundamentally
  51  incompatible with the aim of protecting users' freedom to change the software. The
  52  systematic pattern of such abuse occurs in the area of products for individuals to
  53  use, which is precisely where it is most unacceptable. Therefore, we have designed
  54  this version of the GPL to prohibit the practice for those products. If such problems
  55  arise substantially in other domains, we stand ready to extend this provision to
  56  those domains in future versions of the GPL, as needed to protect the freedom of
  57  users.
  58  
  59  Finally, every program is threatened constantly by software patents. States should
  60  not allow patents to restrict development and use of software on general-purpose
  61  computers, but in those that do, we wish to avoid the special danger that patents
  62  applied to a free program could make it effectively proprietary. To prevent this, the
  63  GPL assures that patents cannot be used to render the program non-free.
  64  
  65  The precise terms and conditions for copying, distribution and modification follow.
  66  
  67  ## TERMS AND CONDITIONS
  68  
  69  ### 0. Definitions.
  70  
  71  &ldquo;This License&rdquo; refers to version 3 of the GNU General Public License.
  72  
  73  &ldquo;Copyright&rdquo; also means copyright-like laws that apply to other kinds of
  74  works, such as semiconductor masks.
  75  
  76  &ldquo;The Program&rdquo; refers to any copyrightable work licensed under this
  77  License. Each licensee is addressed as &ldquo;you&rdquo;. &ldquo;Licensees&rdquo; and
  78  &ldquo;recipients&rdquo; may be individuals or organizations.
  79  
  80  To &ldquo;modify&rdquo; a work means to copy from or adapt all or part of the work in
  81  a fashion requiring copyright permission, other than the making of an exact copy. The
  82  resulting work is called a &ldquo;modified version&rdquo; of the earlier work or a
  83  work &ldquo;based on&rdquo; the earlier work.
  84  
  85  A &ldquo;covered work&rdquo; means either the unmodified Program or a work based on
  86  the Program.
  87  
  88  To &ldquo;propagate&rdquo; a work means to do anything with it that, without
  89  permission, would make you directly or secondarily liable for infringement under
  90  applicable copyright law, except executing it on a computer or modifying a private
  91  copy. Propagation includes copying, distribution (with or without modification),
  92  making available to the public, and in some countries other activities as well.
  93  
  94  To &ldquo;convey&rdquo; a work means any kind of propagation that enables other
  95  parties to make or receive copies. Mere interaction with a user through a computer
  96  network, with no transfer of a copy, is not conveying.
  97  
  98  An interactive user interface displays &ldquo;Appropriate Legal Notices&rdquo; to the
  99  extent that it includes a convenient and prominently visible feature that (1)
 100  displays an appropriate copyright notice, and (2) tells the user that there is no
 101  warranty for the work (except to the extent that warranties are provided), that
 102  licensees may convey the work under this License, and how to view a copy of this
 103  License. If the interface presents a list of user commands or options, such as a
 104  menu, a prominent item in the list meets this criterion.
 105  
 106  ### 1. Source Code.
 107  
 108  The &ldquo;source code&rdquo; for a work means the preferred form of the work for
 109  making modifications to it. &ldquo;Object code&rdquo; means any non-source form of a
 110  work.
 111  
 112  A &ldquo;Standard Interface&rdquo; means an interface that either is an official
 113  standard defined by a recognized standards body, or, in the case of interfaces
 114  specified for a particular programming language, one that is widely used among
 115  developers working in that language.
 116  
 117  The &ldquo;System Libraries&rdquo; of an executable work include anything, other than
 118  the work as a whole, that (a) is included in the normal form of packaging a Major
 119  Component, but which is not part of that Major Component, and (b) serves only to
 120  enable use of the work with that Major Component, or to implement a Standard
 121  Interface for which an implementation is available to the public in source code form.
 122  A &ldquo;Major Component&rdquo;, in this context, means a major essential component
 123  (kernel, window system, and so on) of the specific operating system (if any) on which
 124  the executable work runs, or a compiler used to produce the work, or an object code
 125  interpreter used to run it.
 126  
 127  The &ldquo;Corresponding Source&rdquo; for a work in object code form means all the
 128  source code needed to generate, install, and (for an executable work) run the object
 129  code and to modify the work, including scripts to control those activities. However,
 130  it does not include the work's System Libraries, or general-purpose tools or
 131  generally available free programs which are used unmodified in performing those
 132  activities but which are not part of the work. For example, Corresponding Source
 133  includes interface definition files associated with source files for the work, and
 134  the source code for shared libraries and dynamically linked subprograms that the work
 135  is specifically designed to require, such as by intimate data communication or
 136  control flow between those subprograms and other parts of the work.
 137  
 138  The Corresponding Source need not include anything that users can regenerate
 139  automatically from other parts of the Corresponding Source.
 140  
 141  The Corresponding Source for a work in source code form is that same work.
 142  
 143  ### 2. Basic Permissions.
 144  
 145  All rights granted under this License are granted for the term of copyright on the
 146  Program, and are irrevocable provided the stated conditions are met. This License
 147  explicitly affirms your unlimited permission to run the unmodified Program. The
 148  output from running a covered work is covered by this License only if the output,
 149  given its content, constitutes a covered work. This License acknowledges your rights
 150  of fair use or other equivalent, as provided by copyright law.
 151  
 152  You may make, run and propagate covered works that you do not convey, without
 153  conditions so long as your license otherwise remains in force. You may convey covered
 154  works to others for the sole purpose of having them make modifications exclusively
 155  for you, or provide you with facilities for running those works, provided that you
 156  comply with the terms of this License in conveying all material for which you do not
 157  control copyright. Those thus making or running the covered works for you must do so
 158  exclusively on your behalf, under your direction and control, on terms that prohibit
 159  them from making any copies of your copyrighted material outside their relationship
 160  with you.
 161  
 162  Conveying under any other circumstances is permitted solely under the conditions
 163  stated below. Sublicensing is not allowed; section 10 makes it unnecessary.
 164  
 165  ### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
 166  
 167  No covered work shall be deemed part of an effective technological measure under any
 168  applicable law fulfilling obligations under article 11 of the WIPO copyright treaty
 169  adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention
 170  of such measures.
 171  
 172  When you convey a covered work, you waive any legal power to forbid circumvention of
 173  technological measures to the extent such circumvention is effected by exercising
 174  rights under this License with respect to the covered work, and you disclaim any
 175  intention to limit operation or modification of the work as a means of enforcing,
 176  against the work's users, your or third parties' legal rights to forbid circumvention
 177  of technological measures.
 178  
 179  ### 4. Conveying Verbatim Copies.
 180  
 181  You may convey verbatim copies of the Program's source code as you receive it, in any
 182  medium, provided that you conspicuously and appropriately publish on each copy an
 183  appropriate copyright notice; keep intact all notices stating that this License and
 184  any non-permissive terms added in accord with section 7 apply to the code; keep
 185  intact all notices of the absence of any warranty; and give all recipients a copy of
 186  this License along with the Program.
 187  
 188  You may charge any price or no price for each copy that you convey, and you may offer
 189  support or warranty protection for a fee.
 190  
 191  ### 5. Conveying Modified Source Versions.
 192  
 193  You may convey a work based on the Program, or the modifications to produce it from
 194  the Program, in the form of source code under the terms of section 4, provided that
 195  you also meet all of these conditions:
 196  
 197  * a) The work must carry prominent notices stating that you modified it, and giving a
 198  relevant date.
 199  * b) The work must carry prominent notices stating that it is released under this
 200  License and any conditions added under section 7. This requirement modifies the
 201  requirement in section 4 to &ldquo;keep intact all notices&rdquo;.
 202  * c) You must license the entire work, as a whole, under this License to anyone who
 203  comes into possession of a copy. This License will therefore apply, along with any
 204  applicable section 7 additional terms, to the whole of the work, and all its parts,
 205  regardless of how they are packaged. This License gives no permission to license the
 206  work in any other way, but it does not invalidate such permission if you have
 207  separately received it.
 208  * d) If the work has interactive user interfaces, each must display Appropriate Legal
 209  Notices; however, if the Program has interactive interfaces that do not display
 210  Appropriate Legal Notices, your work need not make them do so.
 211  
 212  A compilation of a covered work with other separate and independent works, which are
 213  not by their nature extensions of the covered work, and which are not combined with
 214  it such as to form a larger program, in or on a volume of a storage or distribution
 215  medium, is called an &ldquo;aggregate&rdquo; if the compilation and its resulting
 216  copyright are not used to limit the access or legal rights of the compilation's users
 217  beyond what the individual works permit. Inclusion of a covered work in an aggregate
 218  does not cause this License to apply to the other parts of the aggregate.
 219  
 220  ### 6. Conveying Non-Source Forms.
 221  
 222  You may convey a covered work in object code form under the terms of sections 4 and
 223  5, provided that you also convey the machine-readable Corresponding Source under the
 224  terms of this License, in one of these ways:
 225  
 226  * a) Convey the object code in, or embodied in, a physical product (including a
 227  physical distribution medium), accompanied by the Corresponding Source fixed on a
 228  durable physical medium customarily used for software interchange.
 229  * b) Convey the object code in, or embodied in, a physical product (including a
 230  physical distribution medium), accompanied by a written offer, valid for at least
 231  three years and valid for as long as you offer spare parts or customer support for
 232  that product model, to give anyone who possesses the object code either (1) a copy of
 233  the Corresponding Source for all the software in the product that is covered by this
 234  License, on a durable physical medium customarily used for software interchange, for
 235  a price no more than your reasonable cost of physically performing this conveying of
 236  source, or (2) access to copy the Corresponding Source from a network server at no
 237  charge.
 238  * c) Convey individual copies of the object code with a copy of the written offer to
 239  provide the Corresponding Source. This alternative is allowed only occasionally and
 240  noncommercially, and only if you received the object code with such an offer, in
 241  accord with subsection 6b.
 242  * d) Convey the object code by offering access from a designated place (gratis or for
 243  a charge), and offer equivalent access to the Corresponding Source in the same way
 244  through the same place at no further charge. You need not require recipients to copy
 245  the Corresponding Source along with the object code. If the place to copy the object
 246  code is a network server, the Corresponding Source may be on a different server
 247  (operated by you or a third party) that supports equivalent copying facilities,
 248  provided you maintain clear directions next to the object code saying where to find
 249  the Corresponding Source. Regardless of what server hosts the Corresponding Source,
 250  you remain obligated to ensure that it is available for as long as needed to satisfy
 251  these requirements.
 252  * e) Convey the object code using peer-to-peer transmission, provided you inform
 253  other peers where the object code and Corresponding Source of the work are being
 254  offered to the general public at no charge under subsection 6d.
 255  
 256  A separable portion of the object code, whose source code is excluded from the
 257  Corresponding Source as a System Library, need not be included in conveying the
 258  object code work.
 259  
 260  A &ldquo;User Product&rdquo; is either (1) a &ldquo;consumer product&rdquo;, which
 261  means any tangible personal property which is normally used for personal, family, or
 262  household purposes, or (2) anything designed or sold for incorporation into a
 263  dwelling. In determining whether a product is a consumer product, doubtful cases
 264  shall be resolved in favor of coverage. For a particular product received by a
 265  particular user, &ldquo;normally used&rdquo; refers to a typical or common use of
 266  that class of product, regardless of the status of the particular user or of the way
 267  in which the particular user actually uses, or expects or is expected to use, the
 268  product. A product is a consumer product regardless of whether the product has
 269  substantial commercial, industrial or non-consumer uses, unless such uses represent
 270  the only significant mode of use of the product.
 271  
 272  &ldquo;Installation Information&rdquo; for a User Product means any methods,
 273  procedures, authorization keys, or other information required to install and execute
 274  modified versions of a covered work in that User Product from a modified version of
 275  its Corresponding Source. The information must suffice to ensure that the continued
 276  functioning of the modified object code is in no case prevented or interfered with
 277  solely because modification has been made.
 278  
 279  If you convey an object code work under this section in, or with, or specifically for
 280  use in, a User Product, and the conveying occurs as part of a transaction in which
 281  the right of possession and use of the User Product is transferred to the recipient
 282  in perpetuity or for a fixed term (regardless of how the transaction is
 283  characterized), the Corresponding Source conveyed under this section must be
 284  accompanied by the Installation Information. But this requirement does not apply if
 285  neither you nor any third party retains the ability to install modified object code
 286  on the User Product (for example, the work has been installed in ROM).
 287  
 288  The requirement to provide Installation Information does not include a requirement to
 289  continue to provide support service, warranty, or updates for a work that has been
 290  modified or installed by the recipient, or for the User Product in which it has been
 291  modified or installed. Access to a network may be denied when the modification itself
 292  materially and adversely affects the operation of the network or violates the rules
 293  and protocols for communication across the network.
 294  
 295  Corresponding Source conveyed, and Installation Information provided, in accord with
 296  this section must be in a format that is publicly documented (and with an
 297  implementation available to the public in source code form), and must require no
 298  special password or key for unpacking, reading or copying.
 299  
 300  ### 7. Additional Terms.
 301  
 302  &ldquo;Additional permissions&rdquo; are terms that supplement the terms of this
 303  License by making exceptions from one or more of its conditions. Additional
 304  permissions that are applicable to the entire Program shall be treated as though they
 305  were included in this License, to the extent that they are valid under applicable
 306  law. If additional permissions apply only to part of the Program, that part may be
 307  used separately under those permissions, but the entire Program remains governed by
 308  this License without regard to the additional permissions.
 309  
 310  When you convey a copy of a covered work, you may at your option remove any
 311  additional permissions from that copy, or from any part of it. (Additional
 312  permissions may be written to require their own removal in certain cases when you
 313  modify the work.) You may place additional permissions on material, added by you to a
 314  covered work, for which you have or can give appropriate copyright permission.
 315  
 316  Notwithstanding any other provision of this License, for material you add to a
 317  covered work, you may (if authorized by the copyright holders of that material)
 318  supplement the terms of this License with terms:
 319  
 320  * a) Disclaiming warranty or limiting liability differently from the terms of
 321  sections 15 and 16 of this License; or
 322  * b) Requiring preservation of specified reasonable legal notices or author
 323  attributions in that material or in the Appropriate Legal Notices displayed by works
 324  containing it; or
 325  * c) Prohibiting misrepresentation of the origin of that material, or requiring that
 326  modified versions of such material be marked in reasonable ways as different from the
 327  original version; or
 328  * d) Limiting the use for publicity purposes of names of licensors or authors of the
 329  material; or
 330  * e) Declining to grant rights under trademark law for use of some trade names,
 331  trademarks, or service marks; or
 332  * f) Requiring indemnification of licensors and authors of that material by anyone
 333  who conveys the material (or modified versions of it) with contractual assumptions of
 334  liability to the recipient, for any liability that these contractual assumptions
 335  directly impose on those licensors and authors.
 336  
 337  All other non-permissive additional terms are considered &ldquo;further
 338  restrictions&rdquo; within the meaning of section 10. If the Program as you received
 339  it, or any part of it, contains a notice stating that it is governed by this License
 340  along with a term that is a further restriction, you may remove that term. If a
 341  license document contains a further restriction but permits relicensing or conveying
 342  under this License, you may add to a covered work material governed by the terms of
 343  that license document, provided that the further restriction does not survive such
 344  relicensing or conveying.
 345  
 346  If you add terms to a covered work in accord with this section, you must place, in
 347  the relevant source files, a statement of the additional terms that apply to those
 348  files, or a notice indicating where to find the applicable terms.
 349  
 350  Additional terms, permissive or non-permissive, may be stated in the form of a
 351  separately written license, or stated as exceptions; the above requirements apply
 352  either way.
 353  
 354  ### 8. Termination.
 355  
 356  You may not propagate or modify a covered work except as expressly provided under
 357  this License. Any attempt otherwise to propagate or modify it is void, and will
 358  automatically terminate your rights under this License (including any patent licenses
 359  granted under the third paragraph of section 11).
 360  
 361  However, if you cease all violation of this License, then your license from a
 362  particular copyright holder is reinstated (a) provisionally, unless and until the
 363  copyright holder explicitly and finally terminates your license, and (b) permanently,
 364  if the copyright holder fails to notify you of the violation by some reasonable means
 365  prior to 60 days after the cessation.
 366  
 367  Moreover, your license from a particular copyright holder is reinstated permanently
 368  if the copyright holder notifies you of the violation by some reasonable means, this
 369  is the first time you have received notice of violation of this License (for any
 370  work) from that copyright holder, and you cure the violation prior to 30 days after
 371  your receipt of the notice.
 372  
 373  Termination of your rights under this section does not terminate the licenses of
 374  parties who have received copies or rights from you under this License. If your
 375  rights have been terminated and not permanently reinstated, you do not qualify to
 376  receive new licenses for the same material under section 10.
 377  
 378  ### 9. Acceptance Not Required for Having Copies.
 379  
 380  You are not required to accept this License in order to receive or run a copy of the
 381  Program. Ancillary propagation of a covered work occurring solely as a consequence of
 382  using peer-to-peer transmission to receive a copy likewise does not require
 383  acceptance. However, nothing other than this License grants you permission to
 384  propagate or modify any covered work. These actions infringe copyright if you do not
 385  accept this License. Therefore, by modifying or propagating a covered work, you
 386  indicate your acceptance of this License to do so.
 387  
 388  ### 10. Automatic Licensing of Downstream Recipients.
 389  
 390  Each time you convey a covered work, the recipient automatically receives a license
 391  from the original licensors, to run, modify and propagate that work, subject to this
 392  License. You are not responsible for enforcing compliance by third parties with this
 393  License.
 394  
 395  An &ldquo;entity transaction&rdquo; is a transaction transferring control of an
 396  organization, or substantially all assets of one, or subdividing an organization, or
 397  merging organizations. If propagation of a covered work results from an entity
 398  transaction, each party to that transaction who receives a copy of the work also
 399  receives whatever licenses to the work the party's predecessor in interest had or
 400  could give under the previous paragraph, plus a right to possession of the
 401  Corresponding Source of the work from the predecessor in interest, if the predecessor
 402  has it or can get it with reasonable efforts.
 403  
 404  You may not impose any further restrictions on the exercise of the rights granted or
 405  affirmed under this License. For example, you may not impose a license fee, royalty,
 406  or other charge for exercise of rights granted under this License, and you may not
 407  initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging
 408  that any patent claim is infringed by making, using, selling, offering for sale, or
 409  importing the Program or any portion of it.
 410  
 411  ### 11. Patents.
 412  
 413  A &ldquo;contributor&rdquo; is a copyright holder who authorizes use under this
 414  License of the Program or a work on which the Program is based. The work thus
 415  licensed is called the contributor's &ldquo;contributor version&rdquo;.
 416  
 417  A contributor's &ldquo;essential patent claims&rdquo; are all patent claims owned or
 418  controlled by the contributor, whether already acquired or hereafter acquired, that
 419  would be infringed by some manner, permitted by this License, of making, using, or
 420  selling its contributor version, but do not include claims that would be infringed
 421  only as a consequence of further modification of the contributor version. For
 422  purposes of this definition, &ldquo;control&rdquo; includes the right to grant patent
 423  sublicenses in a manner consistent with the requirements of this License.
 424  
 425  Each contributor grants you a non-exclusive, worldwide, royalty-free patent license
 426  under the contributor's essential patent claims, to make, use, sell, offer for sale,
 427  import and otherwise run, modify and propagate the contents of its contributor
 428  version.
 429  
 430  In the following three paragraphs, a &ldquo;patent license&rdquo; is any express
 431  agreement or commitment, however denominated, not to enforce a patent (such as an
 432  express permission to practice a patent or covenant not to sue for patent
 433  infringement). To &ldquo;grant&rdquo; such a patent license to a party means to make
 434  such an agreement or commitment not to enforce a patent against the party.
 435  
 436  If you convey a covered work, knowingly relying on a patent license, and the
 437  Corresponding Source of the work is not available for anyone to copy, free of charge
 438  and under the terms of this License, through a publicly available network server or
 439  other readily accessible means, then you must either (1) cause the Corresponding
 440  Source to be so available, or (2) arrange to deprive yourself of the benefit of the
 441  patent license for this particular work, or (3) arrange, in a manner consistent with
 442  the requirements of this License, to extend the patent license to downstream
 443  recipients. &ldquo;Knowingly relying&rdquo; means you have actual knowledge that, but
 444  for the patent license, your conveying the covered work in a country, or your
 445  recipient's use of the covered work in a country, would infringe one or more
 446  identifiable patents in that country that you have reason to believe are valid.
 447  
 448  If, pursuant to or in connection with a single transaction or arrangement, you
 449  convey, or propagate by procuring conveyance of, a covered work, and grant a patent
 450  license to some of the parties receiving the covered work authorizing them to use,
 451  propagate, modify or convey a specific copy of the covered work, then the patent
 452  license you grant is automatically extended to all recipients of the covered work and
 453  works based on it.
 454  
 455  A patent license is &ldquo;discriminatory&rdquo; if it does not include within the
 456  scope of its coverage, prohibits the exercise of, or is conditioned on the
 457  non-exercise of one or more of the rights that are specifically granted under this
 458  License. You may not convey a covered work if you are a party to an arrangement with
 459  a third party that is in the business of distributing software, under which you make
 460  payment to the third party based on the extent of your activity of conveying the
 461  work, and under which the third party grants, to any of the parties who would receive
 462  the covered work from you, a discriminatory patent license (a) in connection with
 463  copies of the covered work conveyed by you (or copies made from those copies), or (b)
 464  primarily for and in connection with specific products or compilations that contain
 465  the covered work, unless you entered into that arrangement, or that patent license
 466  was granted, prior to 28 March 2007.
 467  
 468  Nothing in this License shall be construed as excluding or limiting any implied
 469  license or other defenses to infringement that may otherwise be available to you
 470  under applicable patent law.
 471  
 472  ### 12. No Surrender of Others' Freedom.
 473  
 474  If conditions are imposed on you (whether by court order, agreement or otherwise)
 475  that contradict the conditions of this License, they do not excuse you from the
 476  conditions of this License. If you cannot convey a covered work so as to satisfy
 477  simultaneously your obligations under this License and any other pertinent
 478  obligations, then as a consequence you may not convey it at all. For example, if you
 479  agree to terms that obligate you to collect a royalty for further conveying from
 480  those to whom you convey the Program, the only way you could satisfy both those terms
 481  and this License would be to refrain entirely from conveying the Program.
 482  
 483  ### 13. Use with the GNU Affero General Public License.
 484  
 485  Notwithstanding any other provision of this License, you have permission to link or
 486  combine any covered work with a work licensed under version 3 of the GNU Affero
 487  General Public License into a single combined work, and to convey the resulting work.
 488  The terms of this License will continue to apply to the part which is the covered
 489  work, but the special requirements of the GNU Affero General Public License, section
 490  13, concerning interaction through a network will apply to the combination as such.
 491  
 492  ### 14. Revised Versions of this License.
 493  
 494  The Free Software Foundation may publish revised and/or new versions of the GNU
 495  General Public License from time to time. Such new versions will be similar in spirit
 496  to the present version, but may differ in detail to address new problems or concerns.
 497  
 498  Each version is given a distinguishing version number. If the Program specifies that
 499  a certain numbered version of the GNU General Public License &ldquo;or any later
 500  version&rdquo; applies to it, you have the option of following the terms and
 501  conditions either of that numbered version or of any later version published by the
 502  Free Software Foundation. If the Program does not specify a version number of the GNU
 503  General Public License, you may choose any version ever published by the Free
 504  Software Foundation.
 505  
 506  If the Program specifies that a proxy can decide which future versions of the GNU
 507  General Public License can be used, that proxy's public statement of acceptance of a
 508  version permanently authorizes you to choose that version for the Program.
 509  
 510  Later license versions may give you additional or different permissions. However, no
 511  additional obligations are imposed on any author or copyright holder as a result of
 512  your choosing to follow a later version.
 513  
 514  ### 15. Disclaimer of Warranty.
 515  
 516  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
 517  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
 518  PROVIDE THE PROGRAM &ldquo;AS IS&rdquo; WITHOUT WARRANTY OF ANY KIND, EITHER
 519  EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 520  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE
 521  QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
 522  DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
 523  
 524  ### 16. Limitation of Liability.
 525  
 526  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
 527  COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS
 528  PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
 529  INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
 530  PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE
 531  OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE
 532  WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 533  POSSIBILITY OF SUCH DAMAGES.
 534  
 535  ### 17. Interpretation of Sections 15 and 16.
 536  
 537  If the disclaimer of warranty and limitation of liability provided above cannot be
 538  given local legal effect according to their terms, reviewing courts shall apply local
 539  law that most closely approximates an absolute waiver of all civil liability in
 540  connection with the Program, unless a warranty or assumption of liability accompanies
 541  a copy of the Program in return for a fee.
 542  
 543  END OF TERMS AND CONDITIONS
 544  
 545  ## How to Apply These Terms to Your New Programs
 546  
 547  If you develop a new program, and you want it to be of the greatest possible use to
 548  the public, the best way to achieve this is to make it free software which everyone
 549  can redistribute and change under these terms.
 550  
 551  To do so, attach the following notices to the program. It is safest to attach them
 552  to the start of each source file to most effectively state the exclusion of warranty;
 553  and each file should have at least the &ldquo;copyright&rdquo; line and a pointer to
 554  where the full notice is found.
 555  
 556      <one line to give the program's name and a brief idea of what it does.>
 557      Copyright (C) <year>  <name of author>
 558  
 559      This program is free software: you can redistribute it and/or modify
 560      it under the terms of the GNU General Public License as published by
 561      the Free Software Foundation, either version 3 of the License, or
 562      (at your option) any later version.
 563  
 564      This program is distributed in the hope that it will be useful,
 565      but WITHOUT ANY WARRANTY; without even the implied warranty of
 566      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 567      GNU General Public License for more details.
 568  
 569      You should have received a copy of the GNU General Public License
 570      along with this program.  If not, see <http://www.gnu.org/licenses/>.
 571  
 572  Also add information on how to contact you by electronic and paper mail.
 573  
 574  If the program does terminal interaction, make it output a short notice like this
 575  when it starts in an interactive mode:
 576  
 577      <program>  Copyright (C) <year>  <name of author>
 578      This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
 579      This is free software, and you are welcome to redistribute it
 580      under certain conditions; type `show c' for details.
 581  
 582  The hypothetical commands `show w' and `show c' should show the appropriate parts of
 583  the General Public License. Of course, your program's commands might be different;
 584  for a GUI interface, you would use an &ldquo;about box&rdquo;.
 585  
 586  You should also get your employer (if you work as a programmer) or school, if any, to
 587  sign a &ldquo;copyright disclaimer&rdquo; for the program, if necessary. For more
 588  information on this, and how to apply and follow the GNU GPL, see
 589  &lt;<http://www.gnu.org/licenses/>&gt;.
 590  
 591  The GNU General Public License does not permit incorporating your program into
 592  proprietary programs. If your program is a subroutine library, you may consider it
 593  more useful to permit linking proprietary applications with the library. If this is
 594  what you want to do, use the GNU Lesser General Public License instead of this
 595  License. But first, please read
 596  &lt;<http://www.gnu.org/philosophy/why-not-lgpl.html>&gt;.

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