- Breaking API changes: removed configauth.HTTPClientAuthenticator and GRPCClientAuthenticator, renamed parserprovider types, dropped deprecated logging flags, and refactored configauth to use ComponentID and map-based getters.
- Data model enhancements: upgraded protobuf to 0.11.0, introduced ExponentialHistogram and new Traces/Metrics/Logs pdata structures, updated scraperhelper to append model, switched queue metrics to opencensus, and made receiver data deliv...
- Tooling and unmarshal improvements: moved pdatagen to an internal package, added multimod tool for releases, simplified unmarshal logic with more hooks, and added unmarshallers for otlpgrpc request/response types.