List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=5118
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=max_ranking&page=5117",
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            "description": "Hi GST202-ers, \nWe are going to try and make a tournament. I have no idea how it will turn out. There are 12 of you! It will be an 8 day tournament, double-elimination, using a 9x9 gride. Let me know if you have questions or problems accessing it. Good luck!",
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            "description": "join and boost your skill by playing against any kind of opponent",
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                "username": "T.Boss Chanatip",
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            "description": "มาเล่นหมากล้อมกันนนน",
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