List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=exclude_provisional&page=338
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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            "subsequent_pairing_method": "strength",
            "min_ranking": 0,
            "max_ranking": 36,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2006-02-20T23:02:00Z",
            "ended": "2006-04-04T12:57:00Z",
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}