improved motionblur s.t. no blur on box sel'n #702
improved motionblur s.t. no blur on box sel'n #702

KonstantinShemyak/cytoscape.js,soomin-maeng/cytoscape.js,rlugojr/cytoscape.js,rlugojr/cytoscape.js,soomin-maeng/cytoscape.js,KonstantinShemyak/cytoscape.js