List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-player_count&page=1304
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=-player_count&page=1305",
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-player_count&page=1303",
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            "name": "No.1 Instinct 19x19 Ranking Match",
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            "description": "1. 본능으로 플레이 하는 것을 권장합니다.\n2. AI는 사용 하지 않는걸 권장합니다. \n3. 하루에 하나 이상의 움직임을 권장 합니다.\n\n\nPlease use Google Translate to read the above text",
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                "name": "if can't win,have fun",
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