1.2.0
Imp splitting of test_preprocessing.py
DOC Switch to gender neutral terms for sister function (#23003)
DOC Fix some typos (#24300)
API Rename OneHotEncoder option sparse to sparse_output (#24412)
ENH Introduces set_output API for pandas output (#23734)
FIX Improves nan support in LabelEncoder (#22629)
MAINT Clean deprecation for 1.2: get_feature_names (#24395)