#15855 [BUGFIX] fix regression with computed filter/map/sort
#15871 [BUGFIX lts] Refactor / fix error handling scenarios.
- Revert changes made in 2.11.3 which made all errors thrown within a run loop unable to be caught with normal try / catch.
- Prevent unhandled rejections from being thrown twice (once by the RSVP unhandled rejection system, and again by Ember.onerror if present).
#15873 [BUGFIX] Update to backburner.js@1.2.3 to prevent issues with swallowing errors thrown within run.join callbacks when Ember.onerror is present.
#15848 [BUGFIX] Ensure helpers have a consistent API.
#15849 [BUGFIX] Fix issue when observing a computed property that is clobbered during creation.
#15797 [BUGFIX] Fix issues with using partials nested within other partials.
#15808 [BUGFIX] Fix a memory leak in certain testing scenarios.
#15746 [BUGFIX] Fix computed sort regression when array property is initially null.
#15777 [BUGFIX] Fix various issues around accessing dynamic data within a partial.
#15606 [BUGFIX] Add fs-extra to deps
#15697 [BUGFIX] Move accessing meta out of the loop
#15710 [BUGFIX] Correctly reset container cache
#15613 [BUGFIX] Don't throw an error, when not all query params are passed to routerService.transitionTo
#15707 [BUGFIX] Fix canInvoke for edge cases
#15722 [BUGFIX] empty path in get helper should not throw assertion
#15733 [BUGFIX] Fix computed sort regression when array prop initially null
#15265 [BUGFIX] fixed issue when passing false to activeClass for {{link-to}}
#15672 Update router_js to 2.0.0.