List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=max_ranking&page=5358
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "id": 3207,
                "name": "New Zealand Tournaments",
                "summary": "This group exists as a place to enjoy weekly tournaments with competitively minded players using the lesser known but arguably strategically superior New Zealand rule set. All are welcome here ヽ(≧◡≦)ノ",
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        {
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            "name": "First test tournament, from the new group, Language Exchange",
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            "description": "This is test to see how a tournament is created here on OGS. Feel free to join the tournament if you would like to. Open for all rankes and all kinds of people here on OGS.",
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