List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-board_size&page=1219
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "做世界高手吧!\nBe the strongest in OGS!\n\n<p><H2><I><a Href=\"https://online-go.com/group/13697\"><big><span style=\"color:yellow;\">Online Go Tournament🎖️",
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