List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=description&page=677
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "A quick 3 round 9x9 tournament to see how the automatic tournaments on OGS work. If it works well, we'll have some more tournaments later on bigger size boards!",
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            "description": "A really fast game...",
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