List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-exclude_provisional&page=5501
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "TEST 9路盤大会(総当たり)",
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            "description": "運営TESTです。\nWeb烏鷺の会メンバー限定の9路盤大会。\n皆さまのご協力をお願いします。通信対局・フィッシャー式(初期3日、一回の増分1日、最大5日間)で行います。",
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            "description": "Add OIl!!",
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