Fetch head-to-head league data.
Standings come from /leagues-h2h/{league_id}/standings/ and per-gameweek
matches from /leagues-h2h-matches/league/{league_id}/.
Summary
Functions
@spec matches( integer(), keyword() ) :: {:ok, [ExFPL.H2HMatch.t()] | map()} | {:error, term()}
Fetch H2H matches for a league.
Pass event: gw to restrict to a gameweek and page: N to paginate. Pass
raw: true to receive the raw map.
@spec standings( integer(), keyword() ) :: {:ok, ExFPL.H2HStandings.t() | map()} | {:error, term()}
Fetch one page of H2H league standings.
Pass page: N to paginate. Pass raw: true to receive the raw map.