contains MRs: https://gitlab.cern.ch/atlas/athena/-/merge_requests/42674 add Rivet ART script https://gitlab.cern.ch/atlas/athena/-/merge_requests/42683 add --ignore-beams flag to Rivet ART https://gitlab.cern.ch/atlas/athena/-/merge_requests/42696 fix LHE counting for NLO setups https://gitlab.cern.ch/atlas/athena/-/merge_requests/42726 update version of AthGeneration and for externals https://gitlab.cern.ch/atlas/athena/-/merge_requests/42753 Fixed TopRecon UserHook https://gitlab.cern.ch/atlas/athena/-/merge_requests/42758 feat: [SUSY] configure 4FS/5FS with a single flag https://gitlab.cern.ch/atlas/athena/-/merge_requests/42835 Improve Pythia8B and Add Lifetime Cut https://gitlab.cern.ch/atlas/athena/-/merge_requests/42843 Fixing Monash base fragment https://gitlab.cern.ch/atlas/athena/-/merge_requests/42857 Fix QCDTruthJetFilter symmetric eta cuts https://gitlab.cern.ch/atlas/athena/-/merge_requests/42900 update to MadGraph 2.9.3 https://gitlab.cern.ch/atlas/athena/-/merge_requests/42950 use GenEvent xsec if none supplied by user https://gitlab.cern.ch/atlas/athena/-/merge_requests/42973 Making sure MGC cleans up copies of events https://gitlab.cern.ch/atlas/athena/-/merge_requests/42976 fix trfMPTools output link handling for evgen MCORE https://gitlab.cern.ch/atlas/athena/-/merge_requests/42977 MGC tests, saving tgz outputs instead of event files https://gitlab.cern.ch/atlas/athena/-/merge_requests/42985 add env. setup for Superchic and postSeq.CountHepMC.CorrectRunNumber = True in... https://gitlab.cern.ch/atlas/athena/-/merge_requests/42999 Patch memory leak in Evnt2Evnt filtering