Hoist another FS-related utility function.
Make this a hair more idiomatic.
Note to myself.
Be more idiomatic here.
Formatting.
Rename FS helper, add sister method for files.
Be config-driven...
Add some structure to our stats data...
Don't thunk back to `String` if we don't have to.
DRY this back up a bit.
Move more uniformly towards `Pathname`.
Tidy up a bit.
Style.
Rename this for accuracy.
Use composition.
DRY up a bit.
Finish up with renaming...
Begin adding support for custom extensions, bare filenames, etc.
Tidy up.
Style...