This project is currently licensed under Creative Commons.
However, CC themselves generally recommend against using CC licenses for software instead suggesting owners look at open source licenses - see here: https://creativecommons.org/faq/
Most notable is the issue of incorporation into projects that use other licenses (i.e. ICON)
If you want to do this I recommend choosealicense.com/ and this code for thought podcast.
We would also be happy to discuss at an ICCS code clinic.