removed code of another idea
re-arranged code within ClassLoader, added possibility to remove a (named) listener, added some TODO on package-handling
added namespace handling after testing packaging - will need some more work (@see TODO)
Merge branch 'master' into PackageHandling
removed a TODO after testing, that use can be placed within namespace-brackets {}. re-added if class exists check. Added a base class Behind for some helper functions and Version-tagging