working on nice event display
working on pf candidates display
checkpoint event display debugging
working on cluster-cluster linking in HGC
checkpoint
checkpoint
fixed issue with event display crashing when showing PFCandidates
Add the HGCal calorimeter collections to the pileup mix, so that they're available for the pileup events
checkpointing work
start work on putting KDTree in arbor
working on speeding up arbor
arbor sped up by factor 100 in pileup situations
Merge pull request #4715 from lgray/HGC-Linking

Massive HGC Clustering speed/memory improvements