A data frame of roster players with acquisition method and date.
Arguments
leagueId
Numeric league ID or ESPN fantasy page URL. Defaults to
getOption("fflr.leagueId"). Function fails if no ID is found.
leagueHistory
logical; Should the leagueHistory version of the API
be called? If TRUE, a list of results is returned, with one element for
each historical year of the league.
...
Additional queries passed to httr::GET(). Arguments are
converted to a named list and passed to query alongside view.