List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5652
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=5651",
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                "name": "Group for GO",
                "summary": "Don't have a group? No problem, just join this group!",
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            "description": "...please join🐵",
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            "description": "Start time: 3:00pm PDT / 10:00pm GMT\nJoin the group chat for announcements, discussions and trash talk. No shows may be disqualified.",
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