- errorevent has dependency to "source event"
- error-listener can not stop the event workflow
wrong log level
rename to meaningful names
remove path in log-message
setId not needed `AnnotationReader` uses Reflexion to read the identifier field

closes #74
introduce `KnownNamespaceAliases` class to handle all the logic with document/entity namespace-aliases

resolving of fullyqualified classnames are know easier
fix tests
fix tests
add test for new class
move `ClassnameResolver` to its own namespace
- remove unused use-statements
- add missing phpdoc
fix tests