 Mappers should be forbidden in bypasses like ele.css() #679
 Mappers should be forbidden in bypasses like ele.css() #679

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