Fix JSON and Black checks

[freemansw1]

This addresses #453 and the zenodo JSON checks. Code is touched (due to new black formatting requirements), so want to make this part of 1.5.4.

• Have you followed our guidelines in CONTRIBUTING.md?
• Have you self-reviewed your code and corrected any misspellings?
• Have you written documentation that is easy to understand?
• Have you written descriptive commit messages?
• Have you added NumPy docstrings for newly added functions?
• Have you formatted your code using black?
• If you have introduced a new functionality, have you added adequate unit tests?
• Have all tests passed in your local clone?
• If you have introduced a new functionality, have you added an example notebook?
• Have you kept your pull request small and limited so that it is easy to review?
• Have the newest changes from this branch been merged?

[freemansw1]

@JuliaKukulies and @w-k-jones are you happy to review quickly?

[github-actions]

Linting results by Pylint:

Your code has been rated at 8.74/10 (previous run: 8.74/10, +0.00)
_{The linting score is an indicator that reflects how well your code version follows Pylint’s coding standards and quality metrics with respect to the RC_v1.5.x branch.
A decrease usually indicates your new code does not fully meet style guidelines or has potential errors.}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.72%. Comparing base (a987435) to head (2ec1642).
Report is 18 commits behind head on RC_v1.5.x.

Additional details and impacted files

@@            Coverage Diff             @@
##           RC_v1.5.x     #457   +/-   ##
==========================================
  Coverage      60.72%   60.72%           
==========================================
  Files             23       23           
  Lines           3537     3537           
==========================================
  Hits            2148     2148           
  Misses          1389     1389           

Flag	Coverage Δ
unittests	60.72% <100.00%> (ø)

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[w-k-jones]

Thanks for solving this! Happy for this to be merged

[JuliaKukulies]

Perfect, thanks @freemansw1 !