Added a return value to the step function when using streaming. This will allow the user to abort parsing by returning false.

jquery.parse.js

@@ -124,7 +124,7 @@
 		if (settings.config.step)	// it had better be there...!
 		{
 			var userStep = settings.config.step;
-			settings.config.step = function(data) { userStep(data, file, settings.inputElem); };
+			settings.config.step = function(data) { return userStep(data, file, settings.inputElem); };
 		}
 
 		var start = 0;