stack_questions(id = NULL, special = NULL, ...)c("answers", "comments", "linked", "related",
"timeline"), describing what information to retrieve about specific questions, or
one of c("featured", "no-answers", "unanswered"), describing a filter
to place on returned quesitons.data.frame of questions.A question object is documented in full here:https://api.stackexchange.com/docs/types/questionIt comes with the following columns:
sort field should be arranged in descending
("desc") or ascending ("asc") order
sort field
sort field