Overzealous black formatting on data lists

[fonnesbeck]

Black makes a poor choice in formatting long arrays, for example in the disasters example:

If there isn't a way of making exceptions for instances like this, the data should be stored externally.

[OriolAbril]

It is possible to turn formatting off with # fmt: on/off the style guide has an example of this: https://github.com/pymc-devs/pymc3/wiki/PyMC3-Jupyter-Notebook-Style-Guide