List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-subsequent_pairing_method&page=4243
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "summary": "Help promote the new mode SUPER BLITZ! 5 second main time 1x1second increments!. No skill involved just speed and mind ;). Tournaments every other day.",
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            "description": "Tournamen is for People who wish to improve their GO skills! Welcome! Be free to call your friends!",
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