CHANGES IN VERSION 1.6.4
-------------------------

BUG FIXES

    o Very slow transmission of large graphs to Cytoscape now much improved.  The transmission time can be estimated thus:
      transferTimeinSeconds = (0.002 * node.count) + (0.013 * edge.count) + (0.002 * noa.count) + (0.002 * eda.count) 

CHANGES IN VERSION 1.6.0
-------------------------

NEW FEATURES

    o setNodeOpacityRule, controlling node fill color, border and/or label; interpolate & lookup modes both supported

    o getNodeSize

    o saveImage now supports pdf as well as png and svg formats

    o setDefaultEdgeFontSize

    o getAdjacentEdgeNames

SIGNIFICANT USER-VISIBLE CHANGES

    o changed method names: layout -> layoutNetwork, version -> pluginVersion, 
      get/setPosition -> get/setNodePosition

    o NAMESPACE now imports four more methods from the graph package, helpful
      for package developers using RCytoscape: edgemode, addNode, addEdge, 
      requested by Robert Flight.

BUG FIXES

    o Changed getNodePosition node.name.delimiter to eliminate regex token, 
      from ':.:' to ':-:' saveLayout now has optional 3rd parameter, 
      'timestamp.in.filename'

    o Fixed bug in setNodeLabelDirect.  Multiple nodes, one label now works. 

    o setCenter now casts x,y to numeric before sending out to CyRPC