• Variable data string improvements in C++ codecs. PR #758.
• Short circuit toString and appendTo in Java codes when buffer is null to avoid debugging issues.
• CLang Tidy fixes for C++ codecs. PR #757.
• Eliminate allocation when calling appendTo on set based fields in Java codecs. PR #755.
• Support optional groups which is a non-standard feature. Issue #754.
• Fix issue with populating optional arrays in Go codecs. PR #750.
• Migrate to maven-publish plugin for Gradle.
• C++ codec sbePosition() method should be SBE_NOEXCEPT.
• Upgrade to Versions 0.28.0.
• Upgrade to Mockito 3.3.0.
• Upgrade to Agrona 1.4.0.
• Upgrade to Gradle 6.2.1.
• Upgrade to JMH 1.23.

Java binaries can be found here...