Add functionaility for setting custom tracking and production cuts in Geant4 and options for Muon Low Energy Productions
Tracking and Production cuts can now be set safely via Gauss properties: UserTrackingCuts
and UserProductionCuts
respectively. Examples can be found in $GAUSSOPTS/MuonLowEnergy.py added in this MR, (along with WIP qmt.)
Edited by Gloria Corti