List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=first_pairing_method&page=5410
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "first_pairing_method": "strength",
            "subsequent_pairing_method": "random",
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            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "group",
            "started": "2015-11-02T06:19:47.875068Z",
            "ended": "2016-10-06T00:02:04.602185Z",
            "start_waiting": "2015-11-02T06:19:47.830071Z",
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    ]
}