ENH: Bring Series.dot up to par with DataFrame.dot
Merge pull request #3470 from dieterv77/SeriesDot

ENH: Bring Series.dot up to par with DataFrame.dot
DOC: add note on pickle being unsafe to docs and pd.load docstring
DOC: Arrange things for 0.11.1
BUG: GH3468 Fix assigning a new index to a duplicate index in a DataFrame would fail
ENH: support for having duplicative indices across blocks (dtypes)
BUG: fix construction of a DataFrame with duplicative indices
BUG: enabled applymap to work (and updated internals/convert to use iget) when

     using a non-unique index (GH2786 for the warning and GH3230 for applymap)