Creative Commons Attribution 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 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.

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.

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.

Full license text:
https://creativecommons.org/licenses/by/4.0/legalcode
