Split routing views into ember-routing-views
Merge pull request #9574 from mmun/split-routing-views

Split routing views into ember-routing-views
Make lookupHelper container aware.

Adds functionality to lookup components from the container (replaces
ember-handlebars `resolveHelper`).
Merge pull request #9572 from rwjblue/htmlbars-helper-missing

Make lookupHelper container aware.
Ensure options are consisten for helpers.

Helpers like `{{yield}}` and `{{outlet}}` will not automatically have
`types`, `hash`, and `hashTypes` populated. This ensures that all
helpers can expect them to exist.
Merge pull request #9577 from rwjblue/ensure-option-consistency

Ensure options are consisten for helpers.
Implement {{bind-attr}} HTMLBars helper.
Merge pull request #9549 from rwjblue/htmlbars-bind-attr

Implement {{bind-attr}} HTMLBars helper.
[BUGFIX beta] Improve missing component error message, for #5424