Fix for MIGHT p-value shuffling all columns by default

[sampan501]

Fixes #

Changes proposed in this pull request:

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[adam2392]

LGTM after minor fixes

[adam2392]

Maybe add a small changelog, as I will release this in v0.3.

It is fixable in v0.2.1 by just manually passing covariate_index=np.arange(X.shape[1], dtype=int) for now.

[adam2392]

The error in test_small_dataset_independent can be fixed by removing the line testing the stat == 0.

[adam2392]

You should also run black, isort, and linters

poetry run poe format
poetry run poe lint
poetry run poe type_check

[adam2392]

The current unit-test CI failures are unrelated and resolved in #129

[adam2392]

black was updated. I re-ran it w/ the updated version on in d849605.

Perhaps you're running an older version @sampan501