This function creates a connection object which stores parameters and gets a login-cookie if available - it does so by passing arguments to the appropriate league-based handler.
Examples
# \donttest{
ff_connect(platform = "mfl", season = 2019, league_id = 54040, rate_limit = FALSE)
#> <MFL connection 2019_54040>
#> List of 5
#> $ platform : chr "MFL"
#> $ season : num 2019
#> $ league_id : chr "54040"
#> $ APIKEY : NULL
#> $ auth_cookie: NULL
#> - attr(*, "class")= chr "mfl_conn"
# }