@ember/test-helpers@3.x requires ember-source: 4.x | 5.x as a peerDependency, making it unclear how to use version 0.6.2 of this addon with Ember 3.28. I don't see an ember-try configuration. Please clarify.
If 0.6.2 is incompatible with ember-source@3.28 it should probably have been released as 0.7.0