type diversity breaks alignment
DOC: Cleanup of plots in visualization.py

DOC: Use square figsize for pie plots
DOC: Don't share axis labels and reorder to fit in page.
Merge pull request #8457 from behzadnouri/align-rhs

BUG: type diversity breaks alignment
Merge pull request #8391 from TomAugspurger/square-pie

DOC: Use square figsize for pie plots
DOC: doc updates for categoricals
TST/PERF: have moments slow tests run faster (GH8450)
DOC: categorical.rst fixups
BUG: fix Index.reindex to preserve name when target is list/ndarray

CLN: drop copy_if_needed kwarg of Index.reindex, it's True everywhere

TST: enable back empty loc/ix tests that failed before

DOC: Bump Index.reindex docstring