All selector Iterators must not do hasNext() in their constructor: ChangeMoveSelector
CR1 preperation
ReplayingEntitySelector + test
extract remove() method to SelectionIterator
rename to Mimic*
mimicSelectorRef: prototype
XmlSolverFactory: Remove the special XStream construction (because it's not compatible with using XML attributes)
XStreamProblemIO: Remove the special XStream construction
XStreamProblemIO: Remove the special XStream construction: data files