[BUGFIX beta] Total invalidation of arrayComputed by non-array dependencies should be synchronous
Fix exports from ES6ing of ember-application.

Fixes #4593.
Merge pull request #4594 from rjackson/fix-missing-exports

Fix exports from ES6ing of ember-application.
Merge pull request #4302 from mmun/sync-invalidation

[BUGFIX beta] Total invalidation of arrayComputed should be synchronous