1.5.2
MNT Fix E721 linting issues to do type comparisons with is (#29501)
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)
DOC improved documentation for BaseSearchCV fit method - precomputed kernel or distance matrices (#29586)
FEAT add metadata routing to *SearchCV (#27058)
FIX make 'array-like' reject sparse containers in parameter validation (#28101)