# Licence Information

The content of this repository is distributed under two licenses:

- all software is distributed under the [MIT
  License](https://choosealicense.com/licenses/mit/),
- the rest of the repository (CAD designs, drawings, texts, etc.) are
  distributed under the [Creative Commons Licence
  BY-NC-SA](https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode).

The licenses follow:


# MIT License

Copyright (c) 2018 Jan Mrázek

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

# Attribution-NonCommercial-ShareAlike 4.0 International

Creative Commons Corporation (“Creative Commons”) is not a law firm and does not
provide legal services or legal advice. Distribution of Creative Commons public
licenses does not create a lawyer-client or other relationship. Creative Commons
makes its licenses and related information available on an “as-is” basis.
Creative Commons gives no warranties regarding its licenses, any material
licensed under their terms and conditions, or any related information. Creative
Commons disclaims all liability for damages resulting from their use to the
fullest extent possible.

### Using Creative Commons Public Licenses

Creative Commons public licenses provide a standard set of terms and conditions
that creators and other rights holders may use to share original works of
authorship and other material subject to copyright and certain other rights
specified in the public license below. The following considerations are for
informational purposes only, are not exhaustive, and do not form part of our
licenses.

* __Considerations for licensors:__ Our public licenses are intended for use by
  those authorized to give the public permission to use material in ways
  otherwise restricted by copyright and certain other rights. Our licenses are
  irrevocable. Licensors should read and understand the terms and conditions of
  the license they choose before applying it. Licensors should also secure all
  rights necessary before applying our licenses so that the public can reuse the
  material as expected. Licensors should clearly mark any material not subject
  to the license. This includes other CC-licensed material, or material used
  under an exception or limitation to copyright. [More considerations for
  licensors](http://wiki.creativecommons.org/Considerations_for_licensors_and_licensees#Considerations_for_licensors).

* __Considerations for the public:__ By using one of our public licenses, a
  licensor grants the public permission to use the licensed material under
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  encouraged to respect those requests where reasonable. [More considerations
  for the
  public](http://wiki.creativecommons.org/Considerations_for_licensors_and_licensees#Considerations_for_licensees).

## Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Public License

By exercising the Licensed Rights (defined below), You accept and agree to be
bound by the terms and conditions of this Creative Commons
Attribution-NonCommercial-ShareAlike 4.0 International Public License ("Public
License"). To the extent this Public License may be interpreted as a contract,
You are granted the Licensed Rights in consideration of Your acceptance of these
terms and conditions, and the Licensor grants You such rights in consideration
of benefits the Licensor receives from making the Licensed Material available
under these terms and conditions.

### Section 1 – Definitions.

a. __Adapted Material__ means material subject to Copyright and Similar Rights
that is derived from or based upon the Licensed Material and in which the
Licensed Material is translated, altered, arranged, transformed, or otherwise
modified in a manner requiring permission under the Copyright and Similar Rights
held by the Licensor. For purposes of this Public License, where the Licensed
Material is a musical work, performance, or sound recording, Adapted Material is
always produced where the Licensed Material is synched in timed relation with a
moving image.

b. __Adapter's License__ means the license You apply to Your Copyright and
Similar Rights in Your contributions to Adapted Material in accordance with the
terms and conditions of this Public License.

c. __BY-NC-SA Compatible License__ means a license listed at
[creativecommons.org/compatiblelicenses](http://creativecommons.org/compatiblelicenses),
approved by Creative Commons as essentially the equivalent of this Public
License.

d. __Copyright and Similar Rights__ means copyright and/or similar rights
closely related to copyright including, without limitation, performance,
broadcast, sound recording, and Sui Generis Database Rights, without regard to
how the rights are labeled or categorized. For purposes of this Public License,
the rights specified in Section 2(b)(1)-(2) are not Copyright and Similar
Rights.

e. __Effective Technological Measures__ means those measures that, in the
absence of proper authority, may not be circumvented under laws fulfilling
obligations under Article 11 of the WIPO Copyright Treaty adopted on December
20, 1996, and/or similar international agreements.

f. __Exceptions and Limitations__ means fair use, fair dealing, and/or any other
exception or limitation to Copyright and Similar Rights that applies to Your use
of the Licensed Material.

g. __License Elements__ means the license attributes listed in the name of a
Creative Commons Public License. The License Elements of this Public License are
Attribution, NonCommercial, and ShareAlike.

h. __Licensed Material__ means the artistic or literary work, database, or other
material to which the Licensor applied this Public License.

i. __Licensed Rights__ means the rights granted to You subject to the terms and
conditions of this Public License, which are limited to all Copyright and
Similar Rights that apply to Your use of the Licensed Material and that the
Licensor has authority to license.

j. __Licensor__ means the individual(s) or entity(ies) granting rights under
this Public License.

k. __NonCommercial__ means not primarily intended for or directed towards
commercial advantage or monetary compensation. For purposes of this Public
License, the exchange of the Licensed Material for other material subject to
Copyright and Similar Rights by digital file-sharing or similar means is
NonCommercial provided there is no payment of monetary compensation in
connection with the exchange.

l. __Share__ means to provide material to the public by any means or process
that requires permission under the Licensed Rights, such as reproduction, public
display, public performance, distribution, dissemination, communication, or
importation, and to make material available to the public including in ways that
members of the public may access the material from a place and at a time
individually chosen by them.

m. __Sui Generis Database Rights__ means rights other than copyright resulting
from Directive 96/9/EC of the European Parliament and of the Council of 11 March
1996 on the legal protection of databases, as amended and/or succeeded, as well
as other essentially equivalent rights anywhere in the world.

n. __You__ means the individual or entity exercising the Licensed Rights under
this Public License. Your has a corresponding meaning.

### Section 2 – Scope.

a. ___License grant.___

   1. Subject to the terms and conditions of this Public License, the Licensor
      hereby grants You a worldwide, royalty-free, non-sublicensable,
      non-exclusive, irrevocable license to exercise the Licensed Rights in the
      Licensed Material to:

        A. reproduce and Share the Licensed Material, in whole or in part, for
        NonCommercial purposes only; and

        B. produce, reproduce, and Share Adapted Material for NonCommercial
        purposes only.

   2. __Exceptions and Limitations.__ For the avoidance of doubt, where
      Exceptions and Limitations apply to Your use, this Public License does not
      apply, and You do not need to comply with its terms and conditions.

   3. __Term.__ The term of this Public License is specified in Section 6(a).

   4. __Media and formats; technical modifications allowed.__ The Licensor
      authorizes You to exercise the Licensed Rights in all media and formats
      whether now known or hereafter created, and to make technical
      modifications necessary to do so. The Licensor waives and/or agrees not to
      assert any right or authority to forbid You from making technical
      modifications necessary to exercise the Licensed Rights, including
      technical modifications necessary to circumvent Effective Technological
      Measures. For purposes of this Public License, simply making modifications
      authorized by this Section 2(a)(4) never produces Adapted Material.

   5. __Downstream recipients.__

        A. __Offer from the Licensor – Licensed Material.__ Every recipient of
        the Licensed Material automatically receives an offer from the Licensor
        to exercise the Licensed Rights under the terms and conditions of this
        Public License.

        B. __Additional offer from the Licensor – Adapted Material.__ Every
        recipient of Adapted Material from You automatically receives an offer
        from the Licensor to exercise the Licensed Rights in the Adapted
        Material under the conditions of the Adapter’s License You apply.

        C. __No downstream restrictions.__ You may not offer or impose any
        additional or different terms or conditions on, or apply any Effective
        Technological Measures to, the Licensed Material if doing so restricts
        exercise of the Licensed Rights by any recipient of the Licensed
        Material.

   6. __No endorsement.__ Nothing in this Public License constitutes or may be
      construed as permission to assert or imply that You are, or that Your use
      of the Licensed Material is, connected with, or sponsored, endorsed, or
      granted official status by, the Licensor or others designated to receive
      attribution as provided in Section 3(a)(1)(A)(i).

b. ___Other rights.___

   1. Moral rights, such as the right of integrity, are not licensed under this
      Public License, nor are publicity, privacy, and/or other similar
      personality rights; however, to the extent possible, the Licensor waives
      and/or agrees not to assert any such rights held by the Licensor to the
      limited extent necessary to allow You to exercise the Licensed Rights, but
      not otherwise.

   2. Patent and trademark rights are not licensed under this Public License.

   3. To the extent possible, the Licensor waives any right to collect royalties
      from You for the exercise of the Licensed Rights, whether directly or
      through a collecting society under any voluntary or waivable statutory or
      compulsory licensing scheme. In all other cases the Licensor expressly
      reserves any right to collect such royalties, including when the Licensed
      Material is used other than for NonCommercial purposes.

### Section 3 – License Conditions.

Your exercise of the Licensed Rights is expressly made subject to the following
conditions.

a. ___Attribution.___

   1. If You Share the Licensed Material (including in modified form), You must:

       A. retain the following if it is supplied by the Licensor with the
       Licensed Material:

         i. identification of the creator(s) of the Licensed Material and any
         others designated to receive attribution, in any reasonable manner
         requested by the Licensor (including by pseudonym if designated);

         ii. a copyright notice;

         iii. a notice that refers to this Public License;

         iv. a notice that refers to the disclaimer of warranties;

         v. a URI or hyperlink to the Licensed Material to the extent reasonably
         practicable;

       B. indicate if You modified the Licensed Material and retain an
       indication of any previous modifications; and

       C. indicate the Licensed Material is licensed under this Public License,
       and include the text of, or the URI or hyperlink to, this Public License.

   2. You may satisfy the conditions in Section 3(a)(1) in any reasonable manner
      based on the medium, means, and context in which You Share the Licensed
      Material. For example, it may be reasonable to satisfy the conditions by
      providing a URI or hyperlink to a resource that includes the required
      information.

   3. If requested by the Licensor, You must remove any of the information
      required by Section 3(a)(1)(A) to the extent reasonably practicable.

b. ___ShareAlike.___

In addition to the conditions in Section 3(a), if You Share Adapted Material You
produce, the following conditions also apply.

1. The Adapter’s License You apply must be a Creative Commons license with the
   same License Elements, this version or later, or a BY-NC-SA Compatible
   License.

2. You must include the text of, or the URI or hyperlink to, the Adapter's
   License You apply. You may satisfy this condition in any reasonable manner
   based on the medium, means, and context in which You Share Adapted Material.

3. You may not offer or impose any additional or different terms or conditions
   on, or apply any Effective Technological Measures to, Adapted Material that
   restrict exercise of the rights granted under the Adapter's License You
   apply.

### Section 4 – Sui Generis Database Rights.

Where the Licensed Rights include Sui Generis Database Rights that apply to Your
use of the Licensed Material:

a. for the avoidance of doubt, Section 2(a)(1) grants You the right to extract,
reuse, reproduce, and Share all or a substantial portion of the contents of the
database for NonCommercial purposes only;

b. if You include all or a substantial portion of the database contents in a
database in which You have Sui Generis Database Rights, then the database in
which You have Sui Generis Database Rights (but not its individual contents) is
Adapted Material, including for purposes of Section 3(b); and

c. You must comply with the conditions in Section 3(a) if You Share all or a
substantial portion of the contents of the database.

For the avoidance of doubt, this Section 4 supplements and does not replace Your
obligations under this Public License where the Licensed Rights include other
Copyright and Similar Rights.

### Section 5 – Disclaimer of Warranties and Limitation of Liability.

a. __Unless otherwise separately undertaken by the Licensor, to the extent
possible, the Licensor offers the Licensed Material as-is and as-available, and
makes no representations or warranties of any kind concerning the Licensed
Material, whether express, implied, statutory, or other. This includes, without
limitation, warranties of title, merchantability, fitness for a particular
purpose, non-infringement, absence of latent or other defects, accuracy, or the
presence or absence of errors, whether or not known or discoverable. Where
disclaimers of warranties are not allowed in full or in part, this disclaimer
may not apply to You.__

b. __To the extent possible, in no event will the Licensor be liable to You on
any legal theory (including, without limitation, negligence) or otherwise for
any direct, special, indirect, incidental, consequential, punitive, exemplary,
or other losses, costs, expenses, or damages arising out of this Public License
or use of the Licensed Material, even if the Licensor has been advised of the
possibility of such losses, costs, expenses, or damages. Where a limitation of
liability is not allowed in full or in part, this limitation may not apply to
You.__

c. The disclaimer of warranties and limitation of liability provided above shall
be interpreted in a manner that, to the extent possible, most closely
approximates an absolute disclaimer and waiver of all liability.

### Section 6 – Term and Termination.

a. This Public License applies for the term of the Copyright and Similar Rights
licensed here. However, if You fail to comply with this Public License, then
Your rights under this Public License terminate automatically.

b. Where Your right to use the Licensed Material has terminated under Section
6(a), it reinstates:

   1. automatically as of the date the violation is cured, provided it is cured
      within 30 days of Your discovery of the violation; or

   2. upon express reinstatement by the Licensor.

   For the avoidance of doubt, this Section 6(b) does not affect any right the
   Licensor may have to seek remedies for Your violations of this Public
   License.

c. For the avoidance of doubt, the Licensor may also offer the Licensed Material
under separate terms or conditions or stop distributing the Licensed Material at
any time; however, doing so will not terminate this Public License.

d. Sections 1, 5, 6, 7, and 8 survive termination of this Public License.

### Section 7 – Other Terms and Conditions.

a. The Licensor shall not be bound by any additional or different terms or
conditions communicated by You unless expressly agreed.

b. Any arrangements, understandings, or agreements regarding the Licensed
Material not stated herein are separate from and independent of the terms and
conditions of this Public License.

### Section 8 – Interpretation.

a. For the avoidance of doubt, this Public License does not, and shall not be
interpreted to, reduce, limit, restrict, or impose conditions on any use of the
Licensed Material that could lawfully be made without permission under this
Public License.

b. To the extent possible, if any provision of this Public License is deemed
unenforceable, it shall be automatically reformed to the minimum extent
necessary to make it enforceable. If the provision cannot be reformed, it shall
be severed from this Public License without affecting the enforceability of the
remaining terms and conditions.

c. No term or condition of this Public License will be waived and no failure to
comply consented to unless expressly agreed to by the Licensor.

d. Nothing in this Public License constitutes or may be interpreted as a
limitation upon, or waiver of, any privileges and immunities that apply to the
Licensor or You, including from the legal processes of any jurisdiction or
authority.

> Creative Commons is not a party to its public licenses. Notwithstanding,
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