List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-time_per_move&page=160
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "analysis_enabled": false,
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            "started": "2007-06-21T08:50:00Z",
            "ended": "2018-03-19T21:02:40.745958Z",
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}