docstring conflict between yapf here and drake

[RussTedrake]

If I copy a file from drake that passes drake's linter (which forced me to put docstrings on a new line), then I get

manipulation/jupyter_widgets.py:1 at module level:
        D212: Multi-line docstring summary should start at the first line
manipulation/jupyter_widgets.py:38 in public method `__init__`:
        D212: Multi-line docstring summary should start at the first line
manipulation/jupyter_widgets.py:102 in public method `set_positions`:
        D212: Multi-line docstring summary should start at the first line
manipulation/jupyter_widgets.py:119 in public method `set_joint_positions`:
        D212: Multi-line docstring summary should start at the first line
manipulation/jupyter_widgets.py:152 in public function `MakeJointSlidersThatPublishOnCallback`:
        D212: Multi-line docstring summary should start at the first line

@jamiesnape -- can we configure yapf here to either ignore that warning or make it compatible?

[jamiesnape]

I will double check, but I think we need to swap D212 and D213. We actually linted docstrings long before drake...

[jamiesnape]

(Actually I am surprised Drake enforced the contrary or anything regarding docstrings. I need to see why that is too.)