Ember.copy deprecation warnings

[bgentry]

Using the ember-inspector on my v3.3 app spews an endless series of Ember.copy deprecation warnings:

15:00:44.656 telemetry.js:357 DEPRECATION: Use ember-copy addon instead of copy method and Copyable mixin. [deprecation id: ember-runtime.deprecate-copy-copyable] See https://emberjs.com/deprecations/v3.x/#toc_ember-runtime-deprecate-copy-copyable for more details.
        at logDeprecationStackTrace (http://localhost:4200/assets/vendor.js:17354:29)
        at HANDLERS.(anonymous function) (http://localhost:4200/assets/vendor.js:17456:17)
        at raiseOnDeprecation (http://localhost:4200/assets/vendor.js:17378:17)
        at HANDLERS.(anonymous function) (http://localhost:4200/assets/vendor.js:17456:17)
        at invoke (http://localhost:4200/assets/vendor.js:17465:17)
        at deprecate (http://localhost:4200/assets/vendor.js:17437:34)
        at copy (http://localhost:4200/assets/vendor.js:52794:47)
        at Class.updateOrCreate (<anonymous>:1978:22)
        at Class.fulfill (<anonymous>:1992:26)

Screenshot

Might be as simple as just changing to import for this line to use ember-copy?

[bgentry]

Hopefully #835 is a suitable fix! 🙏