- Moved SyncOverAsync functionality to the Confluent.Kafka.SyncOverAsync namespace.
- Marked DependentProducerBuilder as API-SUBJECT-TO-CHANGE.
- No-op handlers are no longer registered with librdkafka if corresponding handlers are not specified in client builder classes.
- Renamed AsyncAvroSerializer to AvroSerializer and AsyncAvroDeserializer to AvroDeserializer