StataWriter: Replace missing values in string columns by an empty string
TST/BUG: make the gender variable non random in test_hist_by_no_extra_plots
BUG: DataFrame._reduce was converting integers to strings in mixed-type
case.
BUG: Remove creating np.array. This allows us to use our own logic for
promoting dtypes. #6806

BUG: Only convert 0/1 ints to bool. #6806

DOC: added release notes
Merge pull request #6822 from cpcloud/no-random-hist-by-test

TST/BUG: make the gender variable non random in test_hist_by_no_extra_plots
DOC: add versionadded for hdf.default_format (GH6554)
BENCH: add vbench for issue 6697
Merge branch 'mixed_dtype_string_promotion' of https://github.com/dalejung/pandas into dalejung-mixed_dtype_string_promotion

Conflicts:
	doc/source/release.rst
BUG: Regression from 0.13 with fillna and a Series on datetime-like (6344)
Merge pull request #6824 from jreback/fillna

BUG: Regression from 0.13 with fillna and a Series on datetime-like (6344)
Merge branch 'StataParser' of https://github.com/PKEuS/pandas into PKEuS-StataParser

Conflicts:
	doc/source/release.rst
Merge pull request #6825 from cpcloud/replace-dict-vbenches

BENCH: add vbench for issue 6697