List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-min_ranking&page=1081
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Open small tournament for everyone.😉",
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                "name": "Czech Go Club",
                "summary": "Hráči go z čech...",
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            "description": "Hola, juguemos.",
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