@type t() :: %ExTournaments.Pairings.Swiss.Player{
  avoid: ([binary() | integer()] | nil) | nil,
  colors: ([binary()] | nil) | nil,
  id: (binary() | non_neg_integer()) | nil,
  index: (non_neg_integer() | nil) | nil,
  paired_up_down: boolean() | nil,
  rating: (number() | nil) | nil,
  received_bye: boolean() | nil,
  rewarded_with_bye: boolean() | nil,
  score: integer() | nil
}