Adding new hits
cleaning old code
Changed RecHit
Removing stuff
fixing also the hash
Added forgotten file
Caching the 4 and 8 neighbours"
skeleton of PFClusterProducer Refactorization
implement original PF topo cluster algorithm in new framework
Cleaner plugin and old PFlow cluster skeleton
Finish implementation of old pf clusterizer
implement spike and double spike cleaning module
regular PF cluster position calculator
ECAL position calc with depth correction
complete implementation of new PF cluster scheme
functions and gives equivalent results to old clustering on electron gun, 2-4 times faster
recreated strange behavior of position calculations for ECAL in PFClusterAlgo
agrees with PFClusterAlgo to 1e-5 tolerance.

Had to place numerical stability requirements
in both new and old pieces of algoritms to
regularize the behavior of the position fit.
clean up python config, add in energy corrector plugin
add aprticle flow clusters for PS, generate full ECAL PFCluster sequence with corrections
get rid of n-square algorithm in loop
optimize sorting loop
RBX and HPD cleaner