List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=max_ranking&page=4536
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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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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                "name": "9x9 Lovers",
                "summary": "A group for Go players who love the 9x9 board.",
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            "description": "%%%%%%%%%%%%%%%%%%%%%%%%\n\n!!!GAMES ARE NOT SCHEDULED AUTOMATICALLY!!!\n\nONCE TOURNAMENT STARTS:\n\nCOME BACK HERE TO FIND YOUR ASSIGNED OPPONENT\nARRANGE A >30min GVC WITH YOUR OPPONENT\nFINISH YOUR GAME WITHIN ONE WEEK, TO PREVENT BLOCKING THE TOURNAMENT.\nEACH MONDAY, SCHEDULE YOUR NEXT MATCH GVC.\n%%%%%%%%%%%%%%%%%%%%%%%%",
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