Improvements

#1466 - @rubenvp8510 - Expose kerberos fast negotiation configuration #1695 - @KJTsanaktsidis - Use docker-compose to run the functional tests #1699 - @wclaeys - Consumer group support for manually comitting offsets #1714 - @bai - Bump Go to version 1.14.3, golangci-lint to 1.27.0 #1726 - @d1egoaz - Include zstd on the functional tests #1730 - @d1egoaz - KIP-42 Add producer and consumer interceptors #1738 - @varun06 - fixed variable names that are named same as some std lib package names #1741 - @varun06 - updated zstd dependency to latest v1.10.10 #1743 - @varun06 - Fixed declaration dependencies and other lint issues in code base #1763 - @alrs - remove deprecated tls options from test #1769 - @bai - Add support for Kafka 2.6.0

Fixes

#1697 - @kvch - Use gofork for encoding/asn1 to fix ASN errors during Kerberos authentication #1744 - @alrs - Fix isBalanced Function Signature