v3.9.0

[kysrpex]

A new version of SimPhoNy has just been published.

• Extended schema validation feature to attributes (featuring not only cardinality verification, but also value, range for integer attributes and length for string attributes) (Enh/attributes in schema validation #822, Enh/schema validation attribute values #830)
• Fixed typo in example_rdf_import_export.py (thanks @ahashibon)

---

This discussion was created from the release v3.9.0.