ENH: Better Exception when trying to set on Series with tuple-index.
Merge pull request #4837 from jtratner/fix-tuple-index-series-exception

ENH: Better Exception when trying to set on Series with tuple-index.
CLN: replace rwproperty with regular property
Merge pull request #4843 from jtratner/remove-rwproperty

CLN: replace rwproperty with regular property