Fixes#1775. Before implementing your solution I thought of a slightly
simpler one. However, it will let this function pass:
```
def double_inside_single(a):
'Double inside "single "'
```
If we want function to pass, my implementation works. But if we do not,
then I can go with how you suggested I implemented this (I left how I
would begin to handle it commented out). The bottom of the flake8-quotes
documentation seems to suggest that this should pass:
https://pypi.org/project/flake8-quotes/
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
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