Can you update your docstrings to be consistent with the style we've been suggesting to the other students?

E.g.

```python
'''
Persists Configs to and from JSON formatted config files.
'''

# would become

"""Persists Configs to and from JSON formatted config files."""

# and if it was longer than just a summary line

"""Persists Configs to and from JSON formatted config files.

More info ...
"""
```