Update LICENSE to CC BY-SA 4.0

[zorp]

To be in compliance with OS2 license decisions the CC BY-SA 4.0 should be used for all things not code.

[zorp]

@janhalen of @nocodesissi please review this PR

[sissekaliaswendyfan]

I agree on the license, as I understand it - but just to make sure; is it possible to sum up the difference between existing license and CC BY-SA 4.0 and/or a few lines about why all things not code should be under a different license than code? Just to make sure I understand the rationale correctly. Thanks 🙏

[zorp]

I agree on the license, as I understand it - but just to make sure; is it possible to sum up the difference between existing license and CC BY-SA 4.0 and/or a few lines about why all things not code should be under a different license than code? Just to make sure I understand the rationale correctly. Thanks 🙏

CC BY-SA 4.0 is the chosen licens in OS2 and the one described in our how to license material: https://www.os2.eu/knowledge/article/81

The previous licens CC0 1.0 which was chosen when creating the repository because it's the standard CC license that Github provide as a starting point. The difference between CC0 1.0 and CC BY-SA 4.0 is:

• CC0 (Creative Commons Zero) waives all rights to a work, effectively placing it in the public domain.
  • Anyone can use, modify, distribute, or even claim authorship without giving credit.
• CC BY-SA 4.0 is a copyleft license that ensures free use, but with conditions
  • BY (Attribution): The original creator must be credited.
  • SA (ShareAlike): Any derivative work must use the same license (CC BY-SA 4.0).

The reason to use CC for results that are not code:

• CC licenses are specifically designed for text, documents, data, graphics, videos, educational materials, and other non-software content.
• Open source software licenses like MPL, MIT, GPL, or Apache are meant to govern source code, including how it can be modified and distributed.