List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-description&page=1685
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "exclusivity": "open",
            "started": "2014-02-15T06:28:52.791182Z",
            "ended": "2014-05-29T14:07:44.402918Z",
            "start_waiting": "2014-02-15T06:28:52.521906Z",
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}