- Breaking changes: storage implementations no longer write parentSpanID (requires query service upgrade first); Dockerfiles now use ENTRYPOINT and binary name is optional for flags; HTTP Thrift spans require Content-Type header and format...
- New features: Kafka added as a storage plugin; static assets bundled inside the query binary; domain model switched to Protobuf/gogo; HotROD binary and demo improvements; added DisableAutoDiscovery to Cassandra config, connCheckTimeout f...
- Minor improvements and docs: enhanced ES storage logging, added Cassandra index filter, closed span writer in standalone, logged memory storage options, updated collector metric counters, and added CONTRIBUTING GUIDELINES.md.