List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=5949
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=max_ranking&page=5948",
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            "description": "Merry Christmas! Feel free to join this tournament if you are a fan of both Christmas and Go!\n\nNote: This is a competition for all.",
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        {
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                "username": "傳碁學園",
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}