From the `cognoml` directory, ran:

```
python analysis.py > ../data/api/hippo-output.json
```

Also filter zero-variance features.

Unselected observations (samples in the dataset that were not selected
by the user) are now returned. These observations receive predictions
but are missing (-1 encoded) for fields such as `testing` and `status`.

Sorted model parameters by key.

Meant to address https://git.io/vPvtI

Fix pipeline according to:
scikit-learn/scikit-learn#7536 (comment)

Extract selected feature names according to:
scikit-learn/scikit-learn#7536 (comment)

Used `git checkout --theirs` to resolve conflicts

Does not address "Lasso or Ridge only?"

Do not optimize `l1_ratio`. Instead use the default of 0.15. Search a denser
grid for `alpha`. See cognoma#56