AthDerivation and AthAnalysis 21.2: Updating version of MCUtils to 1.3.3
This version fixes a minor bug in the classification of neutralino3 as SUSY particles. It results in incorrect classification of leptons from neutralino3 as 'background-like' rather than 'signal-like'.
I've also updated AthAnalysis. Will need a separate update to do AnalysisBase and AnalysisTop, I think.
FYI @akraszna , @ewelina , @chays , @fmeloni , @scarra , @lcorpe , @shuli