Example Stata Facade Document

The following markdown:

```{python}
%%stata
sysuse auto
mean trunk, over(rep78)
```

Yields this output:

sysuse auto
mean trunk, over(rep78)

. sysuse auto
(1978 automobile data)

. mean trunk, over(rep78)

Mean estimation                              Number of obs = 69

---------------------------------------------------------------
              |       Mean   Std. err.     [95% conf. interval]
--------------+------------------------------------------------
c.trunk@rep78 |
           1  |        8.5        1.5      5.506797     11.4932
           2  |     14.625   1.762076      11.10883    18.14117
           3  |   15.26667   .6555393      13.95856    16.57478
           4  |       13.5   1.242625      11.02038    15.97962
           5  |   11.45455   .8018573      9.854464    13.05463
---------------------------------------------------------------

.