- Upgrade MariaDB to 3.1.4 restoring Java 8 compatibility, with a fallback to 3.0.x via the mariadb.version property.
- Extensive bug fixes covering connection factories, Netty HTTP/2 header handling, logging details, metrics export configs, job launcher exit codes, and more.
- Dependency upgrades (Elasticsearch, Groovy, Micrometer, Netty, Reactor BOM, Spring AMQP/Batch/Data/Tomcat/Undertow) and numerous documentation improvements.