List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=4
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Here we go again for number 4. Good luck everyone.",
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            "description": "who is the pirate king of goban 19x19 this year?\nto find out, win the tournament!!",
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            "description": "좋은 선수들이 많아지고 있습니다^^",
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