## Description

Fixes #X.  <!-- Insert issue number here if applicable. -->

(...)

## To Do

- [ ] Documentation. (If you've add a new command-line flag, for example, find the appropriate page under `docs/` to describe it.)
- [ ] Changelog. (Add an entry to `docs/changelog.rst` near the top of the document.)
- [ ] Tests. (Encouraged but not strictly required.)
