List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-time_per_move&page=1014
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=-time_per_move&page=1013",
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        {
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                "username": "Luc Look",
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            "description": "加入Join NOW!!!",
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            "description": "hiiiiiiiiiiiiiiii people! lets play goooo!!!!!",
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