emberjs/ember.js — pull request #5120 by mmun (2014-07-08 11:26:03+00:00)
Title: Add alias descriptor

Introduces a saner descriptor for aliasing properties via Ember.aliasProperty, eg.

```javascript
Ember.Object.extend({
foo: "FOO",
bar: Ember.aliasProperty('foo')
});
```

- [ ] Review
- [ ] Make sure it fixes #5112
- [ ] Docs

/cc @krisselden @stefanpenner