FIX disallow MultiIndex in Series constructor GH4187
DOC: remove savefig width parameter (#4203)
TST: little endian failure, GH4222
BUG: raise on invalid colormap for older mpl
DOC: release notes
CLN: correct format string
BLD: test_perf tweaks
TST/BUG: disallow bs4==4.2.0 and skip assoc tests
BUG: Display the legend when calling plot with kind='density'. GH4216
Check if a plotting DataFrame with kind='kde' has a legend. GH4216
Updated release note about GH4216.

BUG: legend was not displayed in `DataFrame.plot(kind='kde')`.
BUG: set name attr in DatetimeIndex and PeriodIndex

Now index names are preserved through slicing
BUG: initialize DatetimeIndex with array of strings (#4229)
TST: remove fudgy ujson test #4223
TST: force rebuild
BLD: use wheels and newer scipy bc of 33 scipy issue
CLN: replace __repr__ with __unicode__ for string printing (to use StringMixIn)
DOC: Fix typos in CONTRIBUTING.md
ENH: implement non-unique indexing in series (GH4246)

DOC: release notes
BLD: use mpl 1.1.1 in python 2.7 production travis build