List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=auto_start_on_max&page=5134
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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                "name": "LittleTongo Club",
                "summary": "Littleton based GO club. Welcome to all.",
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            "description": "Open league for everyone. Tournament will be started as soon as 10 players will join it.\n\nPrevious winners: https://online-go.com/group/10842",
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