enhancement in DiagramDesignerWidgetDecoratorBase.prototype.getConnectionAreas

DiagramDesignerWidgetDecoratorBase.prototype.getConnectionAreas =
function (id, isEnd) now receives a second parameter isEnd that is true
if the connection end in this item, false if the item is the source.
based on this the item / decorator can orient the incoming / outgoing
connections to specific edges of the item....