List all tournaments or create a new tournament.

GET /api/v1/tournaments/?ordering=auto_start_on_max&page=5697
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Spring in the Northern Hemisphere is here!  Join us for a fun round robin to celebrate, what else, the old red robin!",
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            "description": "Double-Elimination tournament for everyone. It will be started as soon as 8 players will join it.\n\nPrevious winners: https://online-go.com/group/10842",
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