List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-analysis_enabled&page=145
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=-analysis_enabled&page=144",
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                "summary": "Virtuele DDK club voor Nederlandse spelers en hun vrienden",
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            "description": "Hope you have fun with this tournament. Feel free to message me if you have any questions, or just to tell me what you think. I will be doing the same thing next week on a 9x9 board.",
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