Extracting categories from pages

[salty-horse]

It would be helpful, when using the random_titles() function, to know what categories a page belongs to, along with the quotes.

Do you think it such a functionality will be useful? Either through a separate call to quotes_and_categories() or through a separate categories() call that would perhaps cache the page, assuming a subsequent call to quotes().

If this feels out of scope, I could use a different library to get this information. However, it be nice if I didn't have to fetch a page twice through two different libraries.