Resolve "Handling of boundary crossings in geometry tree"

Documentation/Examples/CMakeLists.txt

Documentation/Examples/boundary_example.cc

Documentation/Examples/cascade_example.cc

Documentation/Examples/cascade_proton_example.cc

Environment/CMakeLists.txt

Environment/Environment.h

Environment/NameModel.h

Environment/VolumeTreeNode.h

Framework/Cascade/CMakeLists.txt

Framework/Cascade/Cascade.h

Framework/Cascade/testCascade.cc

Framework/Cascade/testCascade.h

Framework/Geometry/QuantityVector.h

Framework/Geometry/Trajectory.h

Framework/ProcessSequence/BoundaryCrossingProcess.h

Framework/ProcessSequence/CMakeLists.txt

Framework/ProcessSequence/InteractionProcess.h

Framework/ProcessSequence/ProcessSequence.h

Framework/Random/CMakeLists.txt

Framework/StackInterface/ParticleBase.h