ion-refresher has stopped appearing after upgrade - ionic-framework

Question

I recently upgraded Ionic from 1.1.0 to 1.3.1 and now my ion-refresher has stopped working. Nothing appears when I drag down on the page and the event does not fire.
In my development environment I have:
<ion-view view-title="Test">
<ion-content>
<ion-refresher pulling-text="Pull to refresh..."
on-refresh="vm.refresh()">
</ion-refresher>
<ion-list>
<ion-item>Item 1</ion-item>
<ion-item>Item 2</ion-item>
</ion-list>
</ion-content>
</ion-view>

Answer 1

By changing the versions of Ionic, I discovered that the problem was introduced between 1.1.1 and 1.2.1
Then I compared the html being produced by each version and noticed that the earlier version included class="js-scrolling" on the refresher. I also examined the release notes for 1.2.1. And there I found another clue, buried in some comments on issue #4758:
"By default, Ionic 1.2 will use native scrolling on all platforms."
ion-refresher is based on jsScrolling. If you want ion-refresher you
should enable jsScrolling. You can do it by adding
$ionicConfigProvider.scrolling.jsScrolling(true); in your app config
So I added a script file to my index.html containing this code:
(function () {
"use strict";
angular
.module('app')
.config(ionicConfig);
ionicConfig.$inject = ['$ionicConfigProvider'];
function ionicConfig($ionicConfigProvider) {
$ionicConfigProvider.scrolling.jsScrolling(true);
}
})();
And now my refresher is working again.
EDIT
At least it was working - in the Ripple emulator. But when I tried to run on a device (deploying from Visual Studio 2015) the app would not deploy or run until I removed that line. So now I have this code:
function ionicConfig($ionicConfigProvider) {
//detecting Ripple emulator
var emulating = window.parent && window.parent.ripple;
if (emulating) {
$ionicConfigProvider.scrolling.jsScrolling(true);
}
}