1.4.0rc1
FIX Apply dtype param in `check_array_api_compute_metric` unit test (#27940)
MNT add isort to ruff's rules (#26649)
FIX potential AttributeError when passing list to ValidationCurveDisplay (#27311)
FEAT add metadata routing to *SearchCV (#27058)
DOC linked SplineTransformer to time-related feature engineering example (#26971)
ENH `learning_curve` raises a warning on failure of CV folds (#26299)