These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.
Made following upgrades:
gson 2.8.1 -> 2.8.5 guava 22.0 -> 27.1-jre pb 3.5.1 -> 3.7.0 netty 4.1.17 -> 4.1.34 commons-collections4 4.1 -> 4.3
Updated apache parent pom from 18 to 21 and misc plugins.