List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-handicap&page=5704
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=-handicap&page=5703",
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            "description": "Hola a todos! Armé un nuevo torneo, esta vez de 19x19 con hándicap automático.\nQue salga lindo! Se los extraña :)",
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            "description": "Hai, Gabi!",
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