Please don't use shacl: instead of sh:

[HolgerKnublauch]

I bumped into this project by coincidence and don't have the full history. So apologies if this was discussed before.

But I noticed that the prefix "shacl:" is used.

I would strongly encourage you not to do this, and instead use the established and official prefix "sh:"

Otherwise this risks propagating and we end up with the same mess like dct: and dcterms: who are both used for the same namespace. In practice this is causing a lot of problems, e.g. when people re-save these graphs the serializer may randomly switch from one to the other.