WCSim Validation

bbab99a807ea43e0b75965555f68f051d362affe

Pull Request #552: Add GetSlopes option for 1D as well as 2D

IWCDOD_500MeVmum_centre_xdir

Tests
3851.72 sec
wcsimrootevent plot pass
wcsimrootevent2 plot pass
wcsimrootevent_OD plot pass
Geom pass
bad pass
Geometry warnings pass