getOutputClasses() geändert in:
- ValueIteration
- MultipleLabelIteration
- ExceptionHandling
- ValueSubgroupIteration

- TODO:
  - Remove classes: WriterMultiplier?
  - Remove checkIO
  - XML aus Parameters raus
  - Altes XML Gelumpe raus
  - declare deprecated: 
  		ValidationChain.PARAMETER_CREATE_COMPLETE_MODEL,
  		PreprocessingOperator.PARAMETER_RETURN_PREPROCESSING_MODEL,
  		LogisticRegression.PARAMETER_RETURN_PERFORMANCE,
  		JMySVMLearner.PARAMETER_ESTIMATE_PERFORMANCE
  		AbstractMySVMLearner.PARAMETER_CALCULATE_WEIGHTS
  		
  - honor Operator.shouldAutoConnectPort()
  - SimplePopulationEvaluator raus