If you use

$model
    ->addMediaFromRequest('image')
    ->withResponsiveImages()

And on a later date regenerate the images using php artisan media-library:regenerate, it won't regenerate the responsive images of the base image, only the responsive images of a conversion.

Is your feature request related to a problem? Please describe.
No, it's not related to a problem, but I think YAML is more suitable for configuration. It's easier to read than JSON.

Describe the solution you'd like
The approach is to change the default configuration file to YAML format. This should be backwards compatible, so by using a flag or by detecting JSON format we should trans