DOC: fix docstring of value_counts/nunique dropna argument after GH7424
DOC: Fix parameter in reindex_axis docstring
SQL: don't reflect full database GH7396
FIX: don't create 32 bit int type for int64 column (GH7433)
PERF: allow dst transition computations to be handled much faster
      if the end-points are ok (GH7633)
PERF: allow slice indexers to be computed faster
Merge pull request #7652 from jreback/dst_transitions

PERF: fix perf issue in tz conversions w/o affecting DST transitions
API: disallow inplace setting with where and a non-np.nan value (GH7656)
Merge pull request #7657 from jreback/where

API: disallow inplace setting with where and a non-np.nan value (GH7656)
BUG: DatetimeIndex.delete with tz raises ValueError
BUG: consistent subplot ax handling
Merge pull request #7608 from sinhrks/delete2

BUG: DatetimeIndex.delete with tz raises ValueError
TST/CLN: Refactor io.data.options class to improve testing

Removed most references to month and year (passing expiry date around instead).
Also protected with RemoteDataError checking for the expiry month links.
BUG: Bug in multi-index slice setting, related GH3738
Merge pull request #7667 from jreback/mi_slicing

BUG: Bug in multi-index slice setting, related GH3738
BUG: windows failure on GH7667
Merge pull request #7668 from pydata/mi_slicing2

BUG: windows failure on GH7667
BUG: area plot raises ValueError with tz-aware data
Merge pull request #7515 from sinhrks/areabug

BUG: area plot raises ValueError with tz-aware data
BUG/CLN: LinePlot uses incorrect xlim when secondary_y=True