Trigger parentViewDidChange event. Fixes #2423
Add test for parentViewDidChange event.
Remove unnecessary existing check for `Ember`

Now `Ember` is exist when `Ember.deprecate` is called.
Add code comment
Merge pull request #2867 from tricknotes/remove-unnecessary-check

Remove unnecessary existing check for `Ember`
Merge pull request #2868 from tricknotes/add-code-comment

Add code comment
Merge pull request #2864 from xtian/parent-view-did-change

Trigger parentViewDidChange event. Fixes #2423
Tweaks based on @ebryn's feedback

* Rename Control to Component. This avoids conflicts with the existing
  (behind-a-flag) control and is clearer about intent.
* Remove Ember.register to avoid introducing yet-another registration
  mechanism and move the logic into Ember.Handlebars.helper
Refactored `Ember.Route`s teardown mechanism for rendered views. This fixes #2857, previously multiple outlets were not tore down.
Merge pull request #2873 from Batterii/workmanw/fix-tearing-down-multiple-outlets

Improved `Ember.Route`s teardown mechanism for rendered views.

Prior to this commit, if multiple `render` calls were made in `renderTemplate`, only the last was torn down.
Version bump - 1.0.0-rc.6
update lock file