Merge branch 'ff402' into 'develop'

.gitlab-ci.yml

CMakeLists.txt

Core/Export/SampleToPython.cpp

Param/Node/INodeVisitor.h

Sample/Aggregate/ParticleLayout.cpp

Sample/Aggregate/ParticleLayout.h

Sample/Particle/IAbstractParticle.cpp

Sample/Particle/IAbstractParticle.h

Sample/Particle/IParticle.h

Sample/Particle/Particle.cpp

Sample/Particle/Particle.h

Tests/Unit/Core/ParticleLayoutTest.cpp

Tests/Unit/Sample/ParticleCompositionTest.cpp

Tests/Unit/Sample/ParticleCoreShellTest.cpp

Wrap/Swig/libBornAgainSample.i

auto/Doc/man/bornagain.1

auto/Wrap/doxygenParam.i

auto/Wrap/doxygenSample.i

auto/Wrap/libBornAgainParam.py

auto/Wrap/libBornAgainParam_wrap.cpp