API: provide compat for Timestamp  now/today/utcnow class methods (GH5339)
ENH: allow in-line expression assignment with df.eval

TST: tests for local name overlaps

ENH: moved assign to visit_Assign from visit_Module
BUG/CLN: Refactor sanitize_column broadcasting

And only try to broadcast if columns aren't unique or are MI.

(also in the process fix small bug from #5321)
Merge pull request #5341 from jtratner/tweak-sanitize-column

BUG/CLN: Cleanup sanitize column and abstract broadcasting
DOC: update docs in enhancedperf.rst
TST: addtional tests for multiple assignment, targets
ENH: add target to Scope, use instead of resolvers
BUG: Bug when renaming then set_index on a DataFrame (GH5344)
Merge pull request #5345 from jreback/rename_bug

BUG: Bug when renaming then set_index on a DataFrame (GH5344)
Merge pull request #5342 from jreback/timestamp

API: provide compat for Timestamp  now/today/utcnow class methods (GH5339)
Merge pull request #5343 from jreback/assign_eval

ENH: allow in-line expression assignment with df.eval
CLN: Add axis kwarg to Series wrapper for compat

Update tests to cover full range of Series flex ops and check that they
all accept an axis argument.
Merge pull request #5352 from jtratner/add-axis-kwarg-to-series-flex

CLN: Add axis kwarg to Series wrapper for compat
BUG/ENH: Allow drop to accept axis name

Add tests for DataFrame, Series and Panel, with axis checks, etc.
Merge pull request #5354 from jtratner/allow-drop-to-accept-names

BUG/ENH: Allow drop to accept axis name
DOC: Added/fixed some docstrings, esp Panel flex

str representation of functions is not pretty.

DOC/CLN: Wrap 0.13's release.rst at 80 characters per line.
Merge pull request #5336 from jtratner/minor-doc-cleanups

DOC: Added/fixed some docstrings, esp Panel flex
ENH: Add inplace option to drop and dropna
Merge pull request #5247 from jtratner/inplace-drop

ENH: Add inplace option to drop and dropna
TST: Make sure files are removed in test_graphics

plt.savefig() appends an extension by default, which messes up
ensure_clean(). Added option to ensure_clean() to just return file-like.
Merge pull request #5359 from jtratner/always-cleanup-graphics-files

TST: Make sure files are removed in test_graphics
TST/CLN: Only print on test failure.

Don't pollute test output.