Added support for RelexSet wrapper

[Smit-Parmar]

All Submissions:

• Have you followed the guidelines stated in CONTRIBUTING.md file?
• Have you checked to ensure there aren't any other open Pull Requests for the desired changed?

Type of change

• New feature (non-breaking change which adds functionality)

New Feature Submission:

• Does your submission pass the tests?
• Have you linted your code locally prior to submission?

Changes To Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you successfully ran tests with your changes locally?

closes #1439

[masenf]

Thanks for your contribution! It looks good, just please run pre-commit to get the formatting and linters happy and we will take the PR.

[picklelo]

awesome!