attempting to loosen pinned deps

[ncilfone]

What does this PR do?

Tries to loosen the pinned deps which might cause issues (especially with YAML, TOML libs that can clash with other installed libs). #161

Checklist

• [x] Did you adhere to PEP-8 standards?
• [x] Did you run black and isort prior to submitting your PR?
• [x] Does your PR pass all existing unit tests?
• [x] Did you add associated unit tests for any additional functionality?
• [x] Did you provide documentation (Google Docstring format) whenever possible, even for simple functions or classes?

[coveralls]

Pull Request Test Coverage Report for Build 1583435600

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 95.295%

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Totals
Change from base Build 1583303674:	0.2%
Covered Lines:	1600
Relevant Lines:	1679

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💛 - Coveralls