Unit regress

[jay-m-dev]

Removed deprecated presort parameter from pmlb_regression_results-small.tsv. this was removed from sklearn version 0.24 as documented here: https://scikit-learn.org/0.23/modules/generated/sklearn.ensemble.GradientBoostingRegressor.html?highlight=gradientboostingregressor#sklearn.ensemble.GradientBoostingRegressor

[coveralls]

Pull Request Test Coverage Report for Build 5766817516

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall first build on unit_regress at 82.102%

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Totals
Change from base Build 5755599525:	82.1%
Covered Lines:	4335
Relevant Lines:	5280

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💛 - Coveralls

[HyunjunA]

I tested the unit_regress function for both classification and regression tasks on my Mac with an Apple M1 Max chip, and it worked properly. Jay also checked it on an arm64 virtual machine, and it functioned as expected.