all: add clustersequence-structure handling
jet: add MaxRap
jet: fix Rapidity()
jet: add handling of constituents
jet: fix fastjet.Distance(j1,j2)
recombiner: use fastjet.NewJet instead of fmom.NewPxPyPzE (to get history-idx right)
definition: explicitly pass scheme and strategy
test: improve TestSimple
clusterseq: remove printouts
clusterseq: proper impl. of N3Dumb