Merge branch 'distrib3' into 'develop'

Core/Fitting/FitObjective.cpp

Core/Fitting/FitObjective.h

Core/Fitting/FitStatus.h

Core/Fitting/ObjectiveMetric.cpp

Core/Fitting/ObjectiveMetric.h

Core/Fitting/SimDataPair.cpp

Core/Fitting/SimDataPair.h

Device/Data/CumulativeValue.h

Device/Data/LLData.h

Device/Data/OutputData.h

Device/Detector/SimpleUnitConverters.cpp

Examples/fit52_Advanced/multiple_datasets.py

Sample/SoftParticle/FormFactorSphereLogNormalRadius.h

Tests/UnitTests/Core/Data/LLDataTest.cpp

Tests/UnitTests/Core/Fitting/SimDataPairTest.cpp

auto/Wrap/doxygenCore.i

auto/Wrap/doxygenDevice.i

auto/Wrap/libBornAgainCore.py

auto/Wrap/libBornAgainCore_wrap.cpp

mvvm/model/mvvm/model/sessionitem.cpp