Fix Ember.Test.registerHelper test
Remove SC compatibility in Ember.Array

I think `Ember.Array#isSCArray` is no longer necessary.
Ember.Deferred now handles optional then handlers.
bump ember-dev this should complete the removal of the dependency cycle
Merge pull request #2677 from stefanpenner/fix_deferred

Ember.Deferred now handles optional then handlers.
Merge pull request #2678 from stefanpenner/master

bump ember-dev this should complete the removal of the dependency cycle
bump ember-dev to resolve bad console.log filter in prod
Merge pull request #2660 from tricknotes/remove-SC-compatibility

Remove SC compatibility in Ember.Array
bump handlebars-source – many handlebars bug fixes
Merge pull request #2630 from teddyzeenny/helpers-test-fix

Fix Ember.Test.registerHelper test
Merge pull request #2680 from stefanpenner/fix_handlebars_source

bump handlebars-source – many handlebars bug fixes
Documentation: fix code block of Ember.String.capitalize

Code examples were not displayed in block code.
Merge pull request #2681 from karlguillotte/fix-documentation

Documentation: fix code block for Ember.String.capitalize
fixing JSON syntax error and upgrading ember-handlebars-compiler dependency to 1.0.0-rc.3
Merge pull request #2682 from bartsqueezy/master

Fixing JSON syntax error and upgrading ember-handlebars-compiler dependency to 1.0.0-rc.3
Merge remote-tracking branch 'upstream/master'