Fixed issue #4345.
BUG: fix compilation with MSVC for strcasecmp
TST/BUG: make sure read_html tests work on python 2.6
Fix typo.

Change 'highlites' to 'highlights'.
TST/BUG: fix NameError in network decorator
DOC: release notes
CLN: remove some space
BUG: to_json should raise exception for non-unique index / columns (#4359)
DOC: release notes on GH4359 to_json change
ENH: suppress display.height DeprecationWarning
DOC: update RELEASE.rst
ENH: add git names to test_perf.py

Let users pass nice git names so that they don't have to manually pass sha1
hashes to test between commits.
DOC: cookbook entries