List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=exclusivity&page=342
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "name": "Four Seasons Tournament Series",
                "summary": "Серия турниров \"Четыре Сезона\"",
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            "started": "2014-09-18T12:02:34.927219Z",
            "ended": "2017-09-27T13:01:44.890832Z",
            "start_waiting": "2014-09-18T12:02:33.153824Z",
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}