Fetch multipage articles

[jonocodes]

I have noticed that for articles that are multiple pages, readability only gets the first one. But for postlight parser, this is not the case. It usually manages to page through to the end and capture it all.

Arstechnica for example has multi page articles, like so:
https://arstechnica.com/tech-policy/2024/05/how-dark-money-groups-help-private-isps-lobby-against-municipal-broadband/

This looks like how postlight does it:
https://github.com/postlight/parser/blob/main/src/extractors/generic/next-page-url/extractor.js

[fchasen]

While that does seem like a good use case, I think we'd want to implement this in readers that use readability instead of in the library itself.

I'd imagine it would be something like calling readability on each page that the reader finds for a URL.