Updates for SVJ analysis
- add Hidden Valley, dark matter PDG IDs to keep in gen particles
- add more Zprime cross sections
- store "isHV" truth-level tag for AK8 jets to denote production from Hidden Valley quark
- store GenJet multiplicity
Calling Open Source developers! Join the CERN OSPO launch event on Wed Nov 29th! https://cern.ch/ospo-2