Features
- use "unknown-python-service" as default service name if no service name is configured (#1438)
- add transaction name to error objects (#1441)
- don't send unsampled transactions to APM Server 8.0+ (#1442)
- implement snapshotting of certain configuration during transaction lifetime (#1431)
- propagate traceparent IDs via Celery (#1371)
- removed Python 2 compatibility shims (#1463)
Note: Python 2 support was already removed with version 6.0 of the agent, this now removes unused compatibilit shims.