DOC: fix docstring of value_counts/nunique dropna argument after GH7424
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/CLN: LinePlot uses incorrect xlim when secondary_y=True
PERF: improve resample perf
BUG: Test for underlying price before reducing data

Removed most references to month and year (passing expiry date around instead).
Also protected with RemoteDataError checking for the expiry month links.
BUG: grouped hist raises error with single group
Merge pull request #7665 from dstephens99/master

TST/CLN: Refactor io.data.options class to improve testing
Merge pull request #7673 from sinhrks/minmax_perf

PERF: improve resample perf
TST/COMPAT: numpy master compat with timedelta type coercion
FIX: to_sql takes the boolean column as text column
Merge pull request #7681 from jreback/numpy_issue

TST/COMPAT: numpy master compat with timedelta type coercion
TST: skip buggy test on numpy < 1.7, 3.2, on 32-bits (GH6270)
TST: skip buggy test if can't form test comparison (GH7664)
Merge pull request #7459 from sinhrks/secondary_y

BUG/CLN: LinePlot uses incorrect xlim when secondary_y=True
Merge pull request #7675 from jreback/skip_test

TST: skip buggy tests on debian (GH6270, GH7664)
WIP: select_dtypes impl
Merge pull request #7434 from cpcloud/with-types

ENH: select_dypes impl
DOC: add pointer to options.rst in v0.14.1
DOC: minor corrections in v0.14.1
Merge pull request #7678 from yelite/sql-bool-bug-fix

FIX: to_sql takes the boolean column as text column