Creative Commons Attribution 4.0 International (CC BY 4.0)

By exercising the Licensed Rights (defined below), You accept and agree to be
bound by the terms and conditions of this Creative Commons Attribution 4.0
International Public License ("Public License").

Full legal code: https://creativecommons.org/licenses/by/4.0/legalcode

You are free to:
  - Share — copy and redistribute the material in any medium or format.
  - Adapt — remix, transform, and build upon the material for any purpose,
    even commercially.

The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms:
  - Attribution — You must give appropriate credit, provide a link to the
    license, and indicate if changes were made. You may do so in any reasonable
    manner, but not in any way that suggests the licensor endorses you or your
    use.
  - No additional restrictions — You may not apply legal terms or technological
    measures that legally restrict others from doing anything the license permits.

Notices:
  You do not have to comply with the license for elements of the material in
  the public domain or where your use is permitted by an applicable exception
  or limitation.
  No warranties are given. The license may not give you all of the permissions
  necessary for your intended use. For example, other rights such as publicity,
  privacy, or moral rights may limit how you use the material.
