List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-board_size&page=673
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=-board_size&page=672",
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                "username": "xhu98",
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                "name": "Go Basics",
                "summary": "A learning and teaching environment for players of all strengths with emphasis on tournaments and game reviews. Come teach, learn, and have fun!",
                "require_invitation": false,
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            "subsequent_pairing_method": "strength",
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}