List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-min_ranking&page=1030
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-min_ranking&page=1029",
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            "description": "毎月27日に開催される定例トーナメントです。これは第二十回村瀬碁グループ定例トーナメントです。2020年4月27日に開始されます。\n\nA tournament that happens every month on the 27th. This is the 20th tournament that starts on April 27th, 2020.",
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            "description": "Please don't pause your games, thank you.",
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            "name": "Auto handicap 19x19",
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            "description": "Auto Handicap Enjoy! :)",
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            "description": "Inaugural joyous tournament 2",
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