Releasenotes for vzvz.fhir.nl-vzvz-core.0.3.1

• FIX package version bump to v0.3.1
• FIX bump AuditEvent profile to v2.1.0
• FIX remove version of codesystem
• FIX remove the extra concept because it is part of the 1.0.0 version of the code system
• FIX replace faulty version number
• FIX fix slice definition
• FIX replace system with correct url in example
• FIX add comment
• FIX remove examples with contained reference ids because it causes validation errors
• FIX mark as not experimental to avoid validation errors and warning
• FIX add codesystem to valueset because it's not allowed to add a NamingSystem
• FIX update the invariant that checks if the identifier of an application id as an oid is split into root and extension
• FIX include a valueset, not a code system
• FIX define the NamingSystem for the aorta-app-id
• FIX add a constraint to Device.owner to allow a system identifier by both url and oid
• FIX add narratives and description
• FIX remove references to Device.deviceName to avoid warnings from FHIR IG Publisher