1.5.1
Fix a regression in GridSearchCV for parameter grids that have arrays of different sizes as parameter values (#29314)
DOC use pydata-sphinx-theme for the website (#29038)
TST check compatibility with metadata routing for *ThresholdClassifier* (#29021)
MAINT Clean up deprecations for 1.5: in Displays (#28806)
FEAT add metadata routing to *SearchCV (#27058)
DOC TimeSeriesSplit training set size formula precision (#28322)
FIX make 'array-like' reject sparse containers in parameter validation (#28101)