confluent-kafka-python v2.1.0

v2.1.0 is a feature release with the following features, fixes and enhancements:

• Added set_sasl_credentials. This new method (on the Producer, Consumer, and AdminClient) allows modifying the stored SASL PLAIN/SCRAM credentials that will be used for subsequent (new) connections to a broker (#1511).
• Wheels for Linux / arm64 (#1496).
• Added support for Default num_partitions in CreateTopics Admin API.
• Added support for password protected private key in CachedSchemaRegistryClient.
• Add reference support in Schema Registry client. (@RickTalken, #1304)
• Migrated travis jobs to Semaphore CI (#1503)
• Added support for schema references. (#1514 and @slominskir #1088)
• KIP-320: add offset leader epoch methods to the TopicPartition and Message classes (#1540).

confluent-kafka-python is based on librdkafka v2.1.0, see the librdkafka release notes for a complete list of changes, enhancements, fixes and upgrade considerations.