Merge pull request #784 from waltervh/master

.appveyor.yml

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Core/Aggregate/FTDistributions1D.cpp

Core/Aggregate/FTDistributions1D.h

Core/Aggregate/IInterferenceFunction.cpp

Core/Aggregate/IInterferenceFunction.h

Core/Aggregate/InterferenceFunction1DLattice.cpp

Core/Aggregate/InterferenceFunction1DLattice.h

Core/Aggregate/InterferenceFunction2DLattice.cpp

Core/Aggregate/InterferenceFunction2DLattice.h

Core/Aggregate/InterferenceFunction2DParaCrystal.cpp

Core/Aggregate/InterferenceFunction2DParaCrystal.h

Core/Aggregate/InterferenceFunction2DSuperLattice.cpp

Core/Aggregate/InterferenceFunction2DSuperLattice.h

Core/Aggregate/InterferenceFunction3DLattice.cpp

Core/Aggregate/InterferenceFunction3DLattice.h

Core/Aggregate/InterferenceFunctionFinite2DLattice.cpp

Core/Aggregate/InterferenceFunctionFinite2DLattice.h

Core/Aggregate/InterferenceFunctionFinite3DLattice.cpp