Dispatch stack information to all handlers.
@param {Object.<string, *>} stack
function notifyHandlers(stack, isWindowError) {
	    var exception = null;

	    if (isWindowError && !TraceKit.collectWindowErrors) {
	      return;
	    }

	    for (var i in handlers) {
	      if (handlers.hasOwnProperty(i)) {
	        try {
	          handlers[i].apply(null, [stack].concat(_slice.call(arguments, 2)));
	        } catch (inner) {
	          exception = inner;
	        }
	      }
	    }

	    if (exception) {
	      throw exception;
	    }
	  }