- update to 1.7.0:
* Add error_cb to confluent_cloud.py example
* Clarify that doc output varies based on method
* Docs say Schema when they mean SchemaReference
* Add documentation for NewTopic and NewPartitions

- update to 1.6.1:
* KIP-429 - Incremental consumer rebalancing support.
* OAUTHBEARER support.
* Add return_record_name=True to AvroDeserializer
* Fix deprecated schema.Parse call
* Make reader schema optional in AvroDeserializer
* Add **kwargs to legacy AvroProducer and AvroConsumer constructors to
* support all Consumer and Producer base class constructor arguments, such
* as logger
* Add bool for permanent schema delete
* The avro package is no longer required for Schema-Registry support
* Only write to schema cache once, improving performance
* Improve Schema-Registry error reporting
* producer.flush() could return a non-zero value without hitting the specified timeout.
* Bundles librdkafka v1.6.0 which adds support for Incremental rebalancing,
* Sticky producer partitioning, Transactional producer scalabilty improvements,
* and much much more. See link to release notes below.
* Rename asyncio.py example to avoid circular import
* The Linux wheels are now built with manylinux2010 (rather than manylinux1)
* since OpenSSL v1.1.1 no longer builds on CentOS 5. Older Linux distros may
* thus no longer be supported, such as CentOS 5.
* The in-wheel OpenSSL version has been updated to 1.1.1i.
* Added Message.latency() to retrieve the per-message produce latency.
* Added trove classifiers.