GitLab

* Bugfix for reverse edge issue.

* Resolved copy/paste transcription error

* lint

* Added unit tests for graph with not all reverses.

* linting + added backend device test

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Co-authored-by: Quan (Andy) Gan <coin2028@hotmail.com>
Co-authored-by: Rhett Ying <85214957+Rhett-Ying@users.noreply.github.com>