List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=rules&page=50
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "This tournament for only 20k-9k",
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                "id": 425,
                "name": "Kyu Tournament Group",
                "summary": "Calling all low level kyu go players!",
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