[Earwurm] Easier testing with in-repo examples

[beefchimi]

We should consider either:

1. Building a custom testing page, or...
2. Setting up something like Storybook.

This would make it so much easier to test changes / features in development. Obviously, we would want to make sure that none of this "app code" ends up bundled in the package.

It is possible that we could host a Git page, which would be both the marketing site as well as the "testing ground"... but I just think that would take too much time.