Fix documentation for Ember.Select multiple and disabled attributes
[BUGFIX beta] Calling `replaceIn` would incorrectly move views from the `hasElement` to `inDOM`
[BUGFIX beta] Optimization: Clear the meta cache without using observers.
Add an extra space to fix the list formatting in the input helper docs
Merge pull request #3413 from bmac/fix-input-helper-checkbox-formatting

Add an extra space to fix the list formatting in the input helper docs
Merge pull request #3104 from eviltrout/view_observers

[BUGFIX beta] Optimization: Clear the meta cache without using observers.
Add instantiate example to App.register
Merge pull request #3417 from BlakeWilliams/instantiate-example

Add instantiate example to App.register documentation
fix a typo in container docs
Merge pull request #3420 from goshakkk/container-docs-typo

Fix a typo in container docs
Adding comments for 'extend()' method

Additional comments

Added comments for Mixins

Added example using Ember.Mixin

Added some description of create() vs extend()
Fixed documentation of computed.mapBy. Typos and removed unreferenced second computed property
Merge pull request #3389 from graup/docu-computed

Fixed documentation of computed.mapBy.
add a 'readonly' binding to TextSupport
Merge pull request #3423 from goshakkk/text-support-readonly

Add a 'readonly' binding to TextSupport
Test with all feature flags enabled.
Fix the second half of the bug in suspendListeners

If the same listener was the action for two events, this would result in
only the second event becoming un-suspended, because the first event's
actions would be overridden.
Merge pull request #3425 from rjackson/test_with_feature_flags

Test with all feature flags enabled.
Fix typo in link-to docs.
Merge pull request #3338 from davidmcch/master

Adding comment to extend() function