Refers to non-normative document describing the changes
Refers to attribute requirement levels
Removes API for semantic attributes from class requirements
The last one may be a bit surprising one, but due to following reasons:
Semantic conventions jar is no longer part of either stable or alpha bom of java SDK
The current standalone semconv artifact (1.23.1-alpha) currently contains mix of stable, deprecated and experimental attributes in very flat hierarchy making it a very fragile API
Partially addresses #150.
The last one may be a bit surprising one, but due to following reasons: