CLN: make chunksize an integer in  to_csv to avoid float slicing semantics
CLN: make nxes integers in _get_layout
Merge pull request #7204 from jreback/depr_clean

CLN: eliminate depr warnings on 3.4
BUG: check edge case with GH7190
COMPAT: disable Series datetimeindex/periodindex methods introduced in (GH6380)
DOC: changes to remove Series datetime-like properties (GH6380)
Merge pull request #7206 from jreback/ops

API: remove datetime-like index ops from Series
DOC: cookbook.rst entry
DOC: add some missing entries to api.rst
DOC: fix docs after disabling datetime-like Series-ops (GH7213)
Merge pull request #7215 from jorisvandenbossche/doc-fixes2

DOC: fix datetime-like Series ops in docs + some extra api docs
DOC: doc fixups for (GH7213)
CLN: cleanup related to (GH7206) don't create the disabled properties at all for Series
Merge pull request #7216 from jreback/ops2

DOC/CLN for GH7213/GH7206
BUG: bug in setitem with multi-index and a 0-dim ndarray (GH7218)
Merge pull request #7219 from jreback/si

BUG: bug in setitem with multi-index and a 0-dim ndarray (GH7218)
TST: tests for reindex_like consistency (GH7179)
Merge pull request #7221 from jreback/reindex_like

TST: tests for reindex_like consistency (GH7179)
TST/DOC/BUG: Accommodate OpenPyXL incompatibility

*   Detect whether a compatible version is installed
*   Skip openpyxl unit tests instead of failing
*   Inhibit registration of `openpyxl` engine in `ExcelWriter`
*   Raise `UserWarning`
*   Document limitation as a known issue
*   Resolve issue #7169
Merge pull request #7214 from neirbowj/openpyxl_compat

TST/DOC: Test for and document incompatibility with openpyxl 2.0.0 and later
BUG: boxplot returns incorrect dict
DOC: corrections in v0.14.0