akre54/backbone — pull request #22 by jridgewell (2014-10-29 15:50:23+00:00)
Title: Register stopListening once instead of wrapping

I'm not sure how to best cleanup the `onces` map. Any ideas?

```javascript
var onces = name;
if (typeof onces !== 'object') {
onces = {};
onces[name] = callback;
}
for (event in onces) { ... }
```