3.0.0-rc16

What's Changed

• refactor uuid implementation & add a test uuid factory by @DavidBadura in #584
• throw an exception if duplicated subscriber id exists by @DavidBadura in #586
• move event bus dispatch outside of repository transaction by @DavidBadura in #587
• fix building docs by @DavidBadura in #589
• improve docs layout by @DavidBadura in #590
• Add RunSubscriptionEngineRepository by @DavidBadura in #588

Full Changelog: 3.0.0-rc15...3.0.0-rc16