The package appears to be licensed under a Creative Commons license but only includes the human-readable summary in the debian/copyright file which is not the actual licence. The Creative Commons webpages contains the following disclaimer:
This deed highlights only some of the key features and terms of the actual license. It is not a license and has no legal value. You should carefully review all of the terms and conditions of the actual license before using the licensed material.
Creative Commons is not a law firm and does not provide legal services. Distributing, displaying, or linking to this deed or the license that it summarizes does not create a lawyer-client or any other relationship.
Please use the full, plain-text version of the license text which may be found here:
For more information please consult:
The tag is present in Lintian version
That is the most recent version we know about.
We use semantic versions.
The patch number is a commit step indicator relative to the
release tag in our Git
You can find the detection logic for this version at commit d219a5a. For merge requests, please use the latest version in the Lintian check debian/copyright/dep5.