List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=players_start&page=153
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "summary": "Would you like to compete with hundreds of players in epic tournaments and become the Honinbo, Meijin, Kisei, Tianyuan, Mingren or Kuksu? Join us!",
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            "started": "2020-09-08T07:45:19.827989Z",
            "ended": "2021-03-05T07:59:23.067288Z",
            "start_waiting": "2020-09-08T07:45:19.666806Z",
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}