List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-first_pairing_method&page=5890
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "next": null,
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-first_pairing_method&page=5889",
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        {
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            "name": "Very nice Tuesday night games",
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            },
            "description": "Start time 20:03.\nLet's go!",
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                "id": 6757,
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    ]
}