Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/

TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

1. Definitions.

    "License" shall mean the terms and conditions for use, reproduction, and
    distribution as defined by Sections 1 through 9 of this document.

    "Licensor" shall mean the copyright owner or entity authorized by the
    copyright owner that is granting the License.

    "Legal Entity" shall mean the union of the acting entity and all other
    entities that control, are controlled by, or are under common control
    with that entity. For the purposes of this definition, "control" means
    (i) the power, direct or indirect, to cause the direction or management
    of such entity, whether by contract or otherwise, or (ii) ownership of
    fifty percent (50%) or more of the outstanding shares, or (iii)
    beneficial ownership of such entity.

    "You" (or "Your") shall mean an individual or Legal Entity exercising
    permissions granted by this License.

    "Source" form shall mean the preferred form for making modifications,
    including but not limited to software source code, documentation source,
    and configuration files.

    "Object" form shall mean any form resulting from mechanical
    transformation or translation of a Source form, including but not
    limited to compiled object code, generated documentation, and
    conversions to other media types.

    "Work" shall mean the work of authorship, whether in Source or Object
    form, made available under the License, as indicated by a copyright
    notice that is included in or attached to the work (an example is
    provided in the Appendix below).

    "Derivative Works" shall mean any work, whether in Source or Object
    form, that is based on (or derived from) the Work and for which the
    editorial revisions, annotations, elaborations, or other modifications
    represent, as a whole, an original work of authorship. For the purposes
    of this License, Derivative Works shall not include works that remain
    separable from, or merely link (or bind by name) to the interfaces of,
    the Work and Derivative Works thereof.

    "Contribution" shall mean any work of authorship, including the original
    version of the Work and any modifications or additions to that Work or
    Derivative Works thereof, that is intentionally submitted to Licensor
    for inclusion in the Work by the copyright owner or by an individual or
    Legal Entity authorized to submit on behalf of the copyright owner. For
    the purposes of this definition, "submitted" means any form of
    electronic, verbal, or written communication sent to the Licensor or its
    representatives, including but not limited to communication on
    electronic mailing lists, source code control systems, and issue
    tracking systems that are managed by, or on behalf of, the Licensor for
    the purpose of discussing and improving the Work, but excluding
    communication that is conspicuously marked or otherwise designated in
    writing by the copyright owner as "Not a Contribution."

    "Contributor" shall mean Licensor and any individual or Legal Entity on
    behalf of whom a Contribution has been received by Licensor and
    subsequently incorporated within the Work.

2. Grant of Copyright License. Subject to the terms and conditions of this
License, each Contributor hereby grants to You a perpetual, worldwide,
non-exclusive, no-charge, royalty-free, irrevocable copyright license to
reproduce, prepare Derivative Works of, publicly display, publicly perform,
sublicense, and distribute the Work and such Derivative Works in Source or
Object form.

3. Grant of Patent License. Subject to the terms and conditions of this
License, each Contributor hereby grants to You a perpetual, worldwide,
non-exclusive, no-charge, royalty-free, irrevocable (except as stated in
this section) patent license to make, have made, use, offer to sell, sell,
import, and otherwise transfer the Work, where such license applies only to
those patent claims licensable by such Contributor that are necessarily
infringed by their Contribution(s) alone or by combination of their
Contribution(s) with the Work to which such Contribution(s) was submitted.
If You institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work or a
Contribution incorporated within the Work constitutes direct or contributory
patent infringement, then any patent licenses granted to You under this
License for that Work shall terminate as of the date such litigation is
filed.

4. Redistribution. You may reproduce and distribute copies of the Work or
Derivative Works thereof in any medium, with or without modifications, and
in Source or Object form, provided that You meet the following conditions:

      (a) You must give any other recipients of the Work or Derivative Works
      a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
      stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works that
      You distribute, all copyright, patent, trademark, and attribution
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      do not pertain to any part of the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
      distribution, then any Derivative Works that You distribute must
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      such NOTICE file, excluding those notices that do not pertain to any
      part of the Derivative Works, in at least one of the following places:
      within a NOTICE text file distributed as part of the Derivative Works;
      within the Source form or  documentation, if provided along with the
      Derivative Works; or,  within a display generated by the Derivative
      Works, if and  wherever such third-party notices normally appear. The
      contents of the NOTICE file are for informational purposes only and do
      not modify the License. You may add Your own attribution  notices
      within Derivative Works that You distribute, alongside or as an
      addendum to the NOTICE text from the Work, provided that such
      additional attribution notices cannot be construed as modifying the
      License.

      You may add Your own copyright statement to Your modifications and may
      provide additional or different license terms and conditions for use,
      reproduction, or distribution of Your modifications, or  for any such
      Derivative Works as a whole, provided Your use,  reproduction, and
      distribution of the Work otherwise complies with the conditions stated
      in this License.

5. Submission of Contributions. Unless You explicitly state otherwise, any
Contribution intentionally submitted for inclusion in the Work by You to the
Licensor shall be under the terms and conditions of  this License, without
any additional terms or conditions. Notwithstanding the above, nothing
herein shall supersede or modify the terms of any separate license agreement
you may have executed with Licensor regarding such Contributions.

6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor, except
as required for reasonable and customary use in describing the origin of the
Work and reproducing the content of the NOTICE file.

7. Disclaimer of Warranty. Unless required by applicable law or agreed to in
writing, Licensor provides the Work (and each Contributor provides its
Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied, including, without limitation, any
warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or
FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining
the  appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.

8. Limitation of Liability. In no event and under no legal theory,  whether
in tort (including negligence), contract, or otherwise,  unless required by
applicable law (such as deliberate and grossly negligent acts) or agreed to
in writing, shall any Contributor be liable to You for damages, including
any direct, indirect, special, incidental, or consequential damages of any
character arising as a result of this License or out of the use or inability
to use the Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all other
commercial damages or losses), even if such Contributor has been advised of
the possibility of such damages.

9. Accepting Warranty or Additional Liability. While redistributing the Work
or Derivative Works thereof, You may choose to offer, and charge a fee for,
acceptance of support, warranty, indemnity, or other liability obligations
and/or rights consistent with this License. However, in accepting such
obligations, You may act only on Your own behalf and on Your sole
responsibility, not on behalf of any other Contributor, and only if You
agree to indemnify, defend, and hold each Contributor harmless for any
liability incurred by, or claims asserted against, such Contributor by
reason of your accepting any such warranty or additional liability.

END OF TERMS AND CONDITIONS

APPENDIX: How to apply the Apache License to your work.

To apply the Apache License to your work, attach the following boilerplate
notice, with the fields enclosed by brackets "[]" replaced with your own
identifying information. (Don't include the brackets!)  The text should be
enclosed in the appropriate comment syntax for the file format. We also
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on the same "printed page" as the copyright notice for easier identification
within third-party archives.

   Copyright [yyyy] [name of copyright owner]

Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at:

   https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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