List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-players_start&page=5868
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=-players_start&page=5867",
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            "name": "Read description",
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            "description": "TESTING\nyou can join if you like but this is not the official one and just to test ok bye",
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                "summary": "많이 가입해주세요. 한국분 환영",
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