WCSim Validation

207591f30c3ffdcb3fe6014b34a57c912b8f8332

Pull Request #560: Standardise sampling method for li sources

HKFD_500MeVmum_centre_xdir

Tests
8555.27 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom
bad pass
Geometry warnings pass