BUG: cache coherence issue with chain indexing and setitem (GH7084)
Merge pull request #7087 from jreback/series_cache

BUG: cache coherence issue with chain indexing and setitem (GH7084)
BUG: DatetimeIndex cannot parse string ndarray with dayfirst
Merge pull request #7038 from sinhrks/dayfirst

BUG: DatetimeIndex cannot parse string ndarray with dayfirst
ENH/CLN: Add factorize to IndexOpsMixin
Merge pull request #7090 from sinhrks/factorize

ENH/CLN: Add factorize to IndexOpsMixin
BUG: tz info lost by set_index and reindex