Export stata_kernel notebook

Export a stata_kernel Jupyter notebook to a Stata .do file

Basics copied from nbdev

https://github.com/fastai/nbdev/blob/master/nbs/00_export.ipynb

`read_nb`[source]

read_nb(fname)

Read the notebook in fname.

Simpler versions adapted from nbdev

`notebook2do`[source]

notebook2do(fname)

Create a module file for fname.

`simple_doexport`[source]

simple_doexport(fname:"A stata_kernel notebook name")

Export notebooks matching fname to Stata .do files

from nbdev.export import notebook2script; notebook2script()