Added length property to Ember.Map
Use isNone to check tag name
Switch assertion for simulated Ember.create

The object created by simulated `Ember.create` has many property.
So `deepEqual` couldn't be used for its' assertion.
Added docs of ArrayContentDidChange for array
get of property in false values should return undefined
Merge pull request #2534 from Myslik/master

Added docs of ArrayContentDidChange for array
Merge pull request #2541 from teddyzeenny/false-value-get

Ember.get of any property of a false value should return undefined
Adds the ability to specify the view class used by the outlet Handlebars helper

Previous to this change, the view class used was always an "OutletView" (Metamorph extension of ContainerView).  This change allows the class to be set while still defaulting to the OutletView
RSVP2
Merge pull request #2528 from tricknotes/test-for-ember-create

Switch assertion for simulated Ember.create
Fix incrementProperty/decrementProperty to be able to use with 0
Merge pull request #2544 from komasayuki/increment-by-zero

Fix incrementProperty/decrementProperty to be able to use with 0
Access __container__ directly, not via Ember.get.

This brings these two usages into alignment with the rest of the codebase which uses direct property access for this private property.
Merge pull request #2548 from eventualbuddha/access-container-directly

Access __container__ directly, not via Ember.get.
Allow missing whitespace for assertion fot html text

IE8 ignores whitespace between tag.
Merge pull request #2550 from tricknotes/allow-missing-whitesapce

Allow missing whitespace for assertion fot html text
Add tests to deferred mixin
Fixes #2526 - Updates JsFiddle and JsBin links for rc.3
Merge pull request #2 from teddyzeenny/rsvp2-tests

Tests for deferred mixin
fix some typos in the test names