Add Model#reload
Merge pull request #61 from alexspeller/support-objects-with-no-id

Support objects with no ID
Add dirty tracking for nested objects
Only copy over object properties, not simple values
Fix dirty tracking
Merge pull request #45 from darthdeus/add-model-reload

Add Model#reload
Add Model#revert() to reset changed attributes.
Merge pull request #64 from eventualbuddha/revert

Add Model#revert() to reset changed attributes.
Add hasMany relationships
Add RESTAdapter test around Ember.Array attrs
Fix embedded array params issue.

Closes #62 & #63.
Remove Ember.run from HasManyArray#objectAtContent
Merge branch 'master' of git://github.com/ebryn/ember-model