List all tournaments or create a new tournament.

GET /api/v1/tournaments/?ordering=first_pairing_method&page=5772
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "time_start": "2020-06-11T19:20:00Z",
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            "first_pairing_method": "strength",
            "subsequent_pairing_method": "strength",
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            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2020-06-11T19:20:03.921744Z",
            "ended": "2020-06-11T21:02:54.315873Z",
            "start_waiting": "2020-06-11T19:20:03.315818Z",
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    ]
}