Does not work with QUnit 2.17.0

[boris-petrov]

I updated QUnit from 2.16.0 to 2.17.0 and my tests started to freeze. I think it's because of ember-cli-memory-leak-detector because my tests finish and then it freezes there - where I think memory leaks are detected.

[steveszc]

Thanks for reporting. This may be related to #47
Seems like there are some changes in Qunit that break the fundamental way that this addon runs the leak detection and reports memory leaks.

I haven't had much time to work on this addon lately, but it will require some effort to get things working again with newer versions of Qunit.

[steveszc]

Closing in favor of #49