List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=max_ranking&page=341
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "This is a tournament for Hikaru no Go fans, but others are welcome, too. Provisional Players are allowed, but please no sandbaggers here!",
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