This is a feature release.

Enhancements

• References librdkafka.redist 2.1.0. Refer to the librdkafka v2.1.0 release notes and later ones for more information.
• Added SetSaslCredentials. 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 (#1980).
• Changed the way the _SCHEMA filed is accessed internally from reflecting the static field to accessing it from the instance (AlexeyRaga).
• KIP-320: add offset leader epoch fields to the TopicPartitionOffset, TopicPartitionOffsetError and ConsumeResult classes (#2027).

Fixes

• Fixed OverflowException thrown intermittently when using the ListGroup method (#2003).