List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=time_per_move&page=5947
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "summary": "The home for all of the old OGS mini tournaments",
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                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
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            "subsequent_pairing_method": "strength",
            "min_ranking": 0,
            "max_ranking": 9,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2006-07-23T15:57:00Z",
            "ended": "2007-03-25T22:21:00Z",
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            "player_count": 0,
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}