Add warning
Merge pull request #1032 from ahawkins/empty-root-warning

Add warning when load request, but not data given
first pass at uncatchable assertions
Fix failing tests due to promise-hidden exceptions and uncatchable assertions
Remove expectAssertion in favor of ember-dev
Merge pull request #1033 from stefanpenner/uncatchable_assert_and_fixes

Uncatchable assert and fixes