Check against `null` and `undefined`
id serialization correctly returns null for null or undefined id values rather than 0
Better serializeId implementation that takes empty strings into consideration and fixed a logic error in isNaN(id) check
Remove redundant serialized variable. :/
Allow metadata value to be zero
Merge pull request #1042 from bradleypriest/zero-meta

Allow metadata value to be zero
remove nested run loop.
improve variable naming consistency
this expression makes my brain hurt, lets atleast expand this to two
lines. (We need some sort of macro system to improve these assertions.
Merge pull request #1038 from robmonie/id_serialization

id serialization correctly returns null for null or undefined id values ...
Merge pull request #848 from bradfol/hasmany

Bug fix: hasMany loaded as null is throwing exception
Include the version number in the javascript.
Merge pull request #1051 from gunn/patch-1

Include the version number in the javascript.
bump ember-source to 1.0.0-rc.6
Modify code indent
Use `Ember.EnumerableUtils.forEach`
Use `Ember.EnumerableUtils.indexOf`
Use `Ember.EnumerableUtils.map`
fix testing description
Fix to ignore internal property for older IE

The for ~ in loop iterates internal property that defined by
`Ember.create`.
`Ember.keys` should be used to prevent this behavior for iterator.