List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=75
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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                "summary": "For alle GO beginners of the world. We play tournaments with rating limit.",
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                "id": 78,
                "name": "OGS Mini Tournaments",
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        {
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