* Fix new classes and packages tangles
* Move `MessagingAnnotationPostProcessor` and `MethodAnnotationPostProcessor` impls
out of the `config.annotation` package due to usage of the `FactoryBean` configs
* Move `GenericHandler` and `GenericTransformer` to the `core` package to break
a tangle with a `LambdaMessageProcessor`
* Clean up affected tests and docs
* * Fix Checkstyle violation for imports order
0eb6ae172e