* check preservation of newlines when exporting XML

* classpath uri resolver, class javadocs.
* APIs for Files in the XML parsing. 
* API javadoc in general. 
* More examples in package javadoc. 


* SimpleInjector extends Injector. InjectorFactoryBuilder aanpassen
* Test injector generaliseren:   bind(intfclass, obj), bind(annotclass, intfclass, obj)