The tests previously asserted on no entries being found in the event publication tables. As other tests might have been run before, they could already contain some.
Avoid explicit MySQL database driver dependency to align with Boot. DatabaseSchemaInitializer is now fully immutable, receiving the ResourceLoader in its constructor.
Switch to consistent usage of secrets via environment variables. Remove documentation generation from standard build. Some general POM polishing. A bit of release documentation.
A couple of renames in the exposed APIs. MapBasedEventPublicationRepository now uses a a TreeMap again instead of a List (closer to what the original EventPublicationRegistry did).
Cleanups in the JDBC event registry module. Polish pom.xml to minimize dependencies. Removed custom DatabaseType in favor of Boot's DatabaseDriver. Tweaked the auto-configuration of the JDBC module to not even expose a DatabaseSchemaInitializer in the first place to avoid having to wire the boolean flag into the latter.
Cleanups in test cases to avoid code duplication. Move to @JdbcTest to avoid having to depend on Spring Data JDBC.
Enable nullability checks, formatting, Javadoc, author tags, missing license headers.
