List all tournaments or create a new tournament.

GET /api/v1/tournaments/?ordering=-handicap&page=5716
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/?ordering=-handicap&page=5715",
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            "description": "<h2 style=\"color:red\">16 simultaneous games</h2>\n\n<h3>Auto handicap</h3>\n\n<hr/>\n\nJoin the group for more cat tournaments ^__^",
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                "summary": "----------------------------------------------------------------------------------------------------------------------",
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