Added note about empty ids in async relationships issue
Fix ajaxSuccess docblock return value
Extract function to proxy `PromiseManyArray`'s method to `content`
`PromiseManyArray` proxies `Ember.Evented` methods to its `content`
Add fetch method to the store
Use store to call the find method
Add tests for store#fetch
Remove console.log
Add more info about the store.fetch method
Update the store.all docs to make it clearer that it only returns
in-memory records.

Closes #1938
some cleanup as i debug
prefer Ember.create to Object.create

also removes methods not on array prototypes
in IE8 such as forEach

refs emberjs/ember.js#9430
fixes emberjs/data#2488
make the Object.create assertion more specific
Add Test Coverage for `ember-data/transforms`

Transforms are not tested at the `unit` level. Adding tests at the
`unit` granularity allows for regression testing if the
implementation covered by the `acceptance` level tests should change.
changelog/ember add-on update; release beta.12
Add an example to the store.fetch docs
Deprecate store.update()

- store.push() now handles partial updates
- store.update() has been deprecated