List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=exclusivity&page=397
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "2nd edition of the Yenonwoo Pro Open Cup! Expectations is that this tournament goes faster and that also is more excited.\n\nTell your friends!",
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                "username": "樂 碁",
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