track mergin debugging done.
Improved plotting by reducing redundancy. 
Track state checking more effeciently.
Documentation for classes in emblcmci.obj.converters
small typo
nodes merging for multiple nodes per nucleus written.
Coupled dot merging debugged, working OK.
Debugged edge overlapper filtering.
NucleusExtractor, dots merging extended to multiple, not only two.
Speeding up Nucleus extraction trials.
watershed evaluater (fast version) created.
watershed evaluation class added as a post processing in binarization by
Ritsuko method.
TrackRelinker changed with strategy for relinking: not distance between
endpoints, but from candidates select one that has longer track. 

NucleusExtractor added with shape-centroid based correction of the dots.
Implemented simple strategy. no debugging yet.
methods getPerNucleusBinImgProcessors(imp) and reassignNodes(ns) added,
for simple construction of Nodes using particle analysis.
tested with a bit simple method, working oK, but some oversegmentation
unavoidable. For this, this alternative strategy needs to be added with
more on watershed evaluatin so pause at this stage.
CLAHE switched to Fast algorithm.