Better feedback for ember-exam@0.6 and ember-cli-qunit@4.

[rwjblue]

This switch is pretty trolling for users. We made heavy note of the requirements to call start() in ember-cli release notes, but didn't mention anything about ember-exam. I think we can probably make it a bit nicer...

I'd suggest that we create a patch release of ember-exam@0.6.x that uses ember-cli-version-checker to detect if the host app is using ember-cli-qunit@4 and issue a loud warning (or even error) suggesting that they need to upgrade to ember-exam@0.7.

[rwjblue]

@trentmwillis - Do you think ^ is a good plan?

[trentmwillis]

This seems reasonable to me 👍

[trentmwillis]

A little late, but I just published version 0.6.3 that addresses this.

[rwjblue]

Thank you. I completely forgot to do the work mentioned above. Sorry to let that fall back on you.