List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=119
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "exclusivity": "open",
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            "ended": "2018-08-28T15:04:24.211261Z",
            "start_waiting": "2018-08-28T14:33:56.678482Z",
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}