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MNT Fix pre-commit issues (#31013)
Move project directory from scikits.learn to sklearn
MNT upgrade black version (#28802)
Make the test suite itself thread-safe to be able to detect thread-safety problems with or without free-threading (#30041)
TST Fix typos in test_common and test_search (#32723) (#32735)
MNT Enforce ruff rules (RUF) (#30694)
MNT Fix typos found by typos (#33916)
MNT add isort to ruff's rules (#26649)
fix(datasets): retry corrupted OpenML downloads and report the cached path (#34262)
Enable config setting `sparse_interface` to control sparray and spmatrix creation (#31177)
MAINT Drop official PyPy support (#29128)