v2.2.0
DOC: Removing repeated NA (#54821)
ENH/PERF: add ExtensionArray.duplicated (#55255)
API/DEPR: Rename DataFrame.applymap to DataFrame.map (#52364)
ENH: make guess_datetime_format public (#55079)
Revert "DOC: Change core paths to api.typing in URLs (#55626)" (#56565)
DEPR: PeriodIndex ordinal, fields keywords (#55963)
DOC: Minor doc cleanups (#51202)
DEPR: enforce deprecations on DateOffset methods (#48685)
DOC: Add missing API item to reference docs (#48455)
DOC: Replaced single backticks with double backticks in several rst files (#36627)
Backport PR #56059 on branch 2.2.x (ENH: Add case_when method) (#56800)
REF: Styler.applymap -> map (#52708)
DOC: Fixing EX01 - Added examples (#54168)