Merge branch 'nuclear_proposal' into 'master'

corsika/detail/framework/core/ParticleProperties.inl

corsika/detail/framework/process/InteractionCounter.inl

corsika/detail/framework/process/InteractionHistogram.inl

corsika/detail/modules/ParticleCut.inl

corsika/detail/modules/StackInspector.inl

corsika/detail/modules/epos/Interaction.inl

corsika/detail/modules/epos/ParticleConversion.inl

corsika/detail/modules/qgsjetII/Interaction.inl

corsika/detail/modules/sibyll/Decay.inl

corsika/detail/modules/sibyll/Interaction.inl

corsika/detail/modules/sibyll/NuclearInteraction.inl

corsika/detail/modules/sibyll/ParticleConversion.inl

corsika/detail/modules/urqmd/UrQMD.inl

corsika/detail/setup/SetupStack.hpp

corsika/detail/stack/NuclearStackExtension.inl

corsika/detail/stack/VectorStack.inl

corsika/framework/core/ParticleProperties.hpp

corsika/framework/process/InteractionHistogram.hpp

corsika/modules/epos/Interaction.hpp

corsika/modules/epos/ParticleConversion.hpp