RSMTool 9.1.1

What's Changed

• Remove np.warnings from fairness_utils.py. by @desilinguist in #580
• Add new fast_predict() API method for prediction by @desilinguist in #581
• Convert all formatted strings to f-strings and add pre-commit with flynt by @desilinguist in #584
• Integrate black and run on all files by @desilinguist in #586
• Add isort, pydocstyle, flake8 as pre-commit checks by @desilinguist in #587
• Restore and increase test coverage by @desilinguist in #589
• Update contributing docs & remove extraneous whitespace by @desilinguist in #590
• Update SKLL to v3.2.0 by @desilinguist in #591
• Release v9.1.1 by @desilinguist in #592

Full Changelog: v9.0.1...v9.1.1