(This reverts commit 4dabe1ef.)

(and other rounding issue with samerange)

display empty bins if samerange, show unrounded values on range thresh hover, normalize empty bin treatment, write exemplar colors directly in TW.Clusters etc

(forgotten part from last commit 2232005f)

2 x refresh was not necessary because invoked by executeNodeMouseMove

(possible pull request)

SystemState now integrates the currently highlighted neighbors and relations under .selectionRels property + with this we can optimize deselectNodes (replaces both highlightSelectedNodesand greyEverything and enhances cancelSelection)

start integrating neighbors in systemstate (objective: avoid loops on full graph when deselecting with greyEverything) + removed grey flag which was now always == (!active && !highlight)

clarified changeType steps and conditions + added possibility to come back from 'both types active' state

the new variant pushState will append new states itself + SystemState becomes an accessor to TW.states[-1] + start simplifying changeType

via user-configuration of a ranking metric to choose k best labels from the cluster's node set (available from the facet-options dialog box)

NB: still need to rm old nodes1 nodes2

as usual we don't touch the sigma or plugin code, but simply restrict event propagation (plugin's handlers are on body, but events come from sigma container first)

optional: can be set in conf with 'moreLabelsUnderArea' flag, uses our new functions circleGetAreaNodes() and redrawNodesInHoverLayer()