add emplace_back and pop_back, use them
cache backpoint in geometry
small printout to verify regressions
does not compile yet, moved from map to vector
compiles
major regression fixed
added constructor from flats, optimized the other
added move constituents
use cartesian vector in float instead of polar lorenz in double
remove printout
fixed regression in LeafCandidate constructor
fix test
compute mass from difference of directions...
fix constructor
remove printout
fix test
Add back PFRootEvent.
Fix difference in Ghost Towers
Check for negative pt when calculating et to work around rounding errors
small