- 3rd person form: "Does" this or that.
- For all const methods that return something: "Returns" ...
- For boolean return value: "Returns true if " ...

Insert new header comment block, remove old one, manually improve file comments (defines / implements), change brief function description to doxygen format

ToyExperiment is working now with GSL minimizers, check for validity of configuration in ROOTMinimizer

Refactoring in ChiSquaredModule and FitSuiteObjects to have isgisaxs like chi module, unit test for chi module

N of free parameters in ChiModule, scale for max intensity in FitObjects, more tests in TestIsGISAXS12

Fixed bug in InterferenceFunction2DParaCrystal; fixed warnings about size_t -> int conversions; updated Xcode project file