namespace MSG -> Logging. SampleVisitor: level -> depth.

Core/Computation/MainComputation.cpp

Core/Fitting/FitStrategyAdjustParameters.cpp

Core/Fitting/FitSuiteFunctions.cpp

Core/Fitting/FitSuiteImpl.cpp

Core/Fitting/FitSuiteStrategies.cpp

Core/Instrument/IDetector2D.cpp

Core/Multilayer/LayerInterface.cpp

Core/Scattering/ISampleVisitor.cpp

Core/Scattering/ISampleVisitor.h

Core/Scattering/SampleTreeIterator.h

Core/Simulation/Simulation.cpp

Fit/Utils/Logger.cpp

Fit/Utils/Logger.h

GUI/coregui/Models/GUIObjectBuilder.cpp

auto/Wrap/libBornAgainCore.py

auto/Wrap/libBornAgainCore_wrap.cpp

unused/OMPISimulation.cpp