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License as published by the Free Software Foundation; either
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modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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Lesser General Public License for more details.

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1. Definitions

"Adaptation" means a work based upon the Work, or upon the Work and
other pre-existing works, such as a translation, adaptation, derivative
work, arrangement of music or other alterations of a literary or
artistic work, or phonogram or performance and includes cinematographic
adaptations or any other form in which the Work may be recast,
transformed, or adapted including in any form recognizably derived from
the original, except that a work that constitutes a Collection will not
be considered an Adaptation for the purpose of this License. For the
avoidance of doubt, where the Work is a musical work, performance or
phonogram, the synchronization of the Work in timed-relation with a
moving image ("synching") will be considered an Adaptation for the
purpose of this License.  "Collection" means a collection of literary or
artistic works, such as encyclopedias and anthologies, or performances,
phonograms or broadcasts, or other works or subject matter other than
works listed in Section 1(f) below, which, by reason of the selection
and arrangement of their contents, constitute intellectual creations, in
which the Work is included in its entirety in unmodified form along with
one or more other contributions, each constituting separate and
independent works in themselves, which together are assembled into a
collective whole. A work that constitutes a Collection will not be
considered an Adaptation (as defined below) for the purposes of this
License.
"Creative Commons Compatible License" means a license that is listed at
https://creativecommons.org/compatiblelicenses that has been approved by
Creative Commons as being essentially equivalent to this License,
including, at a minimum, because that license: (i) contains terms that
have the same purpose, meaning and effect as the License Elements of
this License; and, (ii) explicitly permits the relicensing of
adaptations of works made available under that license under this
License or a Creative Commons jurisdiction license with the same License
Elements as this License.  "Distribute" means to make available to the
public the original and copies of the Work or Adaptation, as
appropriate, through sale or other transfer of ownership.
"License Elements" means the following high-level license attributes as
selected by Licensor and indicated in the title of this License:
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entity or entities that offer(s) the Work under the terms of this
License.
"Original Author" means, in the case of a literary or artistic work,
the individual, individuals, entity or entities who created the Work or
if no individual or entity can be identified, the publisher; and in
addition (i) in the case of a performance the actors, singers,
musicians, dancers, and other persons who act, sing, deliver, declaim,
play in, interpret or otherwise perform literary or artistic works or
expressions of folklore; (ii) in the case of a phonogram the producer
being the person or legal entity who first fixes the sounds of a
performance or other sounds; and, (iii) in the case of broadcasts, the
organization that transmits the broadcast.  "Work" means the literary
and/or artistic work offered under the terms of this License including
without limitation any production in the literary, scientific and
artistic domain, whatever may be the mode or form of its expression
including digital form, such as a book, pamphlet and other writing; a
lecture, address, sermon or other work of the same nature; a dramatic or
dramatico-musical work; a choreographic work or entertainment in dumb
show; a musical composition with or without words; a cinematographic
work to which are assimilated works expressed by a process analogous to
cinematography; a work of drawing, painting, architecture, sculpture,
engraving or lithography; a photographic work to which are assimilated
works expressed by a process analogous to photography; a work of applied
art; an illustration, map, plan, sketch or three-dimensional work
relative to geography, topography, architecture or science; a
performance; a broadcast; a phonogram; a compilation of data to the
extent it is protected as a copyrightable work; or a work performed by a
variety or circus performer to the extent it is not otherwise considered
a literary or artistic work.
"You" means an individual or entity exercising rights under this
License who has not previously violated the terms of this License with
respect to the Work, or who has received express permission from the
Licensor to exercise rights under this License despite a previous
violation.  "Publicly Perform" means to perform public recitations of
the Work and to communicate to the public those public recitations, by
any means or process, including by wire or wireless means or public
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way that members of the public may access these Works from a place and
at a place individually chosen by them; to perform the Work to the
public by any means or process and the communication to the public of
the performances of the Work, including by public digital performance;
to broadcast and rebroadcast the Work by any means including signs,
sounds or images.
"Reproduce" means to make copies of the Work by any means including
without limitation by sound or visual recordings and the right of
fixation and reproducing fixations of the Work, including storage of a
protected performance or phonogram in digital form or other electronic
medium.  2. Fair Dealing Rights. Nothing in this License is intended to
reduce, limit, or restrict any uses free from copyright or rights
arising from limitations or exceptions that are provided for in
connection with the copyright protection under copyright law or other
applicable laws.

3. License Grant. Subject to the terms and conditions of this License,
Licensor hereby grants You a worldwide, royalty-free, non-exclusive,
perpetual (for the duration of the applicable copyright) license to
exercise the rights in the Work as stated below:

to Reproduce the Work, to incorporate the Work into one or more
Collections, and to Reproduce the Work as incorporated in the
Collections; to create and Reproduce Adaptations provided that any such
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steps to clearly label, demarcate or otherwise identify that changes
were made to the original Work. For example, a translation could be
marked "The original work was translated from English to Spanish," or a
modification could indicate "The original work has been modified.";
to Distribute and Publicly Perform the Work including as incorporated
in Collections; and, to Distribute and Publicly Perform Adaptations.
For the avoidance of doubt:

Non-waivable Compulsory License Schemes. In those jurisdictions in
which the right to collect royalties through any statutory or compulsory
licensing scheme cannot be waived, the Licensor reserves the exclusive
right to collect such royalties for any exercise by You of the rights
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those jurisdictions in which the right to collect royalties through any
statutory or compulsory licensing scheme can be waived, the Licensor
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You of the rights granted under this License; and, Voluntary License
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individually or, in the event that the Licensor is a member of a
collecting society that administers voluntary licensing schemes, via
that society, from any exercise by You of the rights granted under this
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The above rights may be exercised in all media and formats whether now
known or hereafter devised. The above rights include the right to make
such modifications as are technically necessary to exercise the rights
in other media and formats. Subject to Section 8(f), all rights not
expressly granted by Licensor are hereby reserved.

4. Restrictions. The license granted in Section 3 above is expressly
made subject to and limited by the following restrictions:

You may Distribute or Publicly Perform the Work only under the terms of
this License. You must include a copy of, or the Uniform Resource
Identifier (URI) for, this License with every copy of the Work You
Distribute or Publicly Perform. You may not offer or impose any terms on
the Work that restrict the terms of this License or the ability of the
recipient of the Work to exercise the rights granted to that recipient
under the terms of the License. You may not sublicense the Work. You
must keep intact all notices that refer to this License and to the
disclaimer of warranties with every copy of the Work You Distribute or
Publicly Perform. When You Distribute or Publicly Perform the Work, You
may not impose any effective technological measures on the Work that
restrict the ability of a recipient of the Work from You to exercise the
rights granted to that recipient under the terms of the License. This
Section 4(a) applies to the Work as incorporated in a Collection, but
this does not require the Collection apart from the Work itself to be
made subject to the terms of this License. If You create a Collection,
upon notice from any Licensor You must, to the extent practicable,
remove from the Collection any credit as required by Section 4(c), as
requested. If You create an Adaptation, upon notice from any Licensor
You must, to the extent practicable, remove from the Adaptation any
credit as required by Section 4(c), as requested.  You may Distribute or
Publicly Perform an Adaptation only under the terms of: (i) this
License; (ii) a later version of this License with the same License
Elements as this License; (iii) a Creative Commons jurisdiction license
(either this or a later license version) that contains the same License
Elements as this License (e.g., Attribution-ShareAlike 3.0 US)); (iv) a
Creative Commons Compatible License. If you license the Adaptation under
one of the licenses mentioned in (iv), you must comply with the terms of
that license. If you license the Adaptation under the terms of any of
the licenses mentioned in (i), (ii) or (iii) (the "Applicable License"),
you must comply with the terms of the Applicable License generally and
the following provisions: (I) You must include a copy of, or the URI
for, the Applicable License with every copy of each Adaptation You
Distribute or Publicly Perform; (II) You may not offer or impose any
terms on the Adaptation that restrict the terms of the Applicable
License or the ability of the recipient of the Adaptation to exercise
the rights granted to that recipient under the terms of the Applicable
License; (III) You must keep intact all notices that refer to the
Applicable License and to the disclaimer of warranties with every copy
of the Work as included in the Adaptation You Distribute or Publicly
Perform; (IV) when You Distribute or Publicly Perform the Adaptation,
You may not impose any effective technological measures on the
Adaptation that restrict the ability of a recipient of the Adaptation
from You to exercise the rights granted to that recipient under the
terms of the Applicable License. This Section 4(b) applies to the
Adaptation as incorporated in a Collection, but this does not require
the Collection apart from the Adaptation itself to be made subject to
the terms of the Applicable License.
If You Distribute, or Publicly Perform the Work or any Adaptations or
Collections, You must, unless a request has been made pursuant to
Section 4(a), keep intact all copyright notices for the Work and
provide, reasonable to the medium or means You are utilizing: (i) the
name of the Original Author (or pseudonym, if applicable) if supplied,
and/or if the Original Author and/or Licensor designate another party or
parties (e.g., a sponsor institute, publishing entity, journal) for
attribution ("Attribution Parties") in Licensor's copyright notice,
terms of service or by other reasonable means, the name of such party or
parties; (ii) the title of the Work if supplied; (iii) to the extent
reasonably practicable, the URI, if any, that Licensor specifies to be
associated with the Work, unless such URI does not refer to the
copyright notice or licensing information for the Work; and (iv) ,
consistent with Ssection 3(b), in the case of an Adaptation, a credit
identifying the use of the Work in the Adaptation (e.g., "French
translation of the Work by Original Author," or "Screenplay based on
original Work by Original Author"). The credit required by this Section
4(c) may be implemented in any reasonable manner; provided, however,
that in the case of a Adaptation or Collection, at a minimum such credit
will appear, if a credit for all contributing authors of the Adaptation
or Collection appears, then as part of these credits and in a manner at
least as prominent as the credits for the other contributing authors.
For the avoidance of doubt, You may only use the credit required by this
Section for the purpose of attribution in the manner set out above and,
by exercising Your rights under this License, You may not implicitly or
explicitly assert or imply any connection with, sponsorship or
endorsement by the Original Author, Licensor and/or Attribution Parties,
as appropriate, of You or Your use of the Work, without the separate,
express prior written permission of the Original Author, Licensor and/or
Attribution Parties.  Except as otherwise agreed in writing by the
Licensor or as may be otherwise permitted by applicable law, if You
Reproduce, Distribute or Publicly Perform the Work either by itself or
as part of any Adaptations or Collections, You must not distort,
mutilate, modify or take other derogatory action in relation to the Work
which would be prejudicial to the Original Author's honor or reputation.
Licensor agrees that in those jurisdictions (e.g. Japan), in which any
exercise of the right granted in Section 3(b) of this License (the right
to make Adaptations) would be deemed to be a distortion, mutilation,
modification or other derogatory action prejudicial to the Original
Author's honor and reputation, the Licensor will waive or not assert, as
appropriate, this Section, to the fullest extent permitted by the
applicable national law, to enable You to reasonably exercise Your right
under Section 3(b) of this License (right to make Adaptations) but not
otherwise.
5. Representations, Warranties and Disclaimer

UNLESS OTHERWISE MUTUALLY AGREED TO BY THE PARTIES IN WRITING, LICENSOR
OFFERS THE WORK AS-IS AND MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY
KIND CONCERNING THE WORK, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE,
INCLUDING, WITHOUT LIMITATION, WARRANTIES OF TITLE, MERCHANTIBILITY,
FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR THE ABSENCE OF
LATENT OR OTHER DEFECTS, ACCURACY, OR THE PRESENCE OF ABSENCE OF ERRORS,
WHETHER OR NOT DISCOVERABLE. SOME JURISDICTIONS DO NOT ALLOW THE
EXCLUSION OF IMPLIED WARRANTIES, SO SUCH EXCLUSION MAY NOT APPLY TO YOU.

6. Limitation on Liability. EXCEPT TO THE EXTENT REQUIRED BY APPLICABLE
LAW, IN NO EVENT WILL LICENSOR BE LIABLE TO YOU ON ANY LEGAL THEORY FOR
ANY SPECIAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES
ARISING OUT OF THIS LICENSE OR THE USE OF THE WORK, EVEN IF LICENSOR HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

7. Termination

This License and the rights granted hereunder will terminate
automatically upon any breach by You of the terms of this License.
Individuals or entities who have received Adaptations or Collections
from You under this License, however, will not have their licenses
terminated provided such individuals or entities remain in full
compliance with those licenses. Sections 1, 2, 5, 6, 7, and 8 will
survive any termination of this License.  Subject to the above terms and
conditions, the license granted here is perpetual (for the duration of
the applicable copyright in the Work). Notwithstanding the above,
Licensor reserves the right to release the Work under different license
terms or to stop distributing the Work at any time; provided, however
that any such election will not serve to withdraw this License (or any
other license that has been, or is required to be, granted under the
terms of this License), and this License will continue in full force and
effect unless terminated as stated above.

8. Miscellaneous

Each time You Distribute or Publicly Perform the Work or a Collection,
the Licensor offers to the recipient a license to the Work on the same
terms and conditions as the license granted to You under this License.
Each time You Distribute or Publicly Perform an Adaptation, Licensor
offers to the recipient a license to the original Work on the same terms
and conditions as the license granted to You under this License.
If any provision of this License is invalid or unenforceable under
applicable law, it shall not affect the validity or enforceability of
the remainder of the terms of this License, and without further action
by the parties to this agreement, such provision shall be reformed to
the minimum extent necessary to make such provision valid and
enforceable.  No term or provision of this License shall be deemed
waived and no breach consented to unless such waiver or consent shall be
in writing and signed by the party to be charged with such waiver or
consent.
This License constitutes the entire agreement between the parties with
respect to the Work licensed here. There are no understandings,
agreements or representations with respect to the Work not specified
here. Licensor shall not be bound by any additional provisions that may
appear in any communication from You. This License may not be modified
without the mutual written agreement of the Licensor and You.  The
rights granted under, and the subject matter referenced, in this License
were drafted utilizing the terminology of the Berne Convention for the
Protection of Literary and Artistic Works (as amended on September 28,
1979), the Rome Convention of 1961, the WIPO Copyright Treaty of 1996,
the WIPO Performances and Phonograms Treaty of 1996 and the Universal
Copyright Convention (as revised on July 24, 1971). These rights and
subject matter take effect in the relevant jurisdiction in which the
License terms are sought to be enforced according to the corresponding
provisions of the implementation of those treaty provisions in the
applicable national law. If the standard suite of rights granted under
applicable copyright law includes additional rights not granted under
this License, such additional rights are deemed to be included in the
License; this License is not intended to restrict the license of any
rights under applicable law.