List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=exclude_provisional&page=24
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=exclude_provisional&page=23",
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        {
            "id": 655,
            "name": "Baby_Lucifer63467's mini-tournament",
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            "description": "Know how is the best player.",
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                "name": "HKCGA 對局室",
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