List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=players_start&page=5441
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "bonne année et bonne sente",
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            "description": "Three of the best of this tournament will receive the honorary titles of the Lords Of The Red Stone and will take their places in the Hall Of Lords. In the name of the Game Of Stones, may this be done!",
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        {
            "id": 103361,
            "name": "Dritter Versuch",
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                "username": "DSP-Groß",
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            },
            "description": "Das müsste jetzt klappen.",
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            },
            "is_open": true,
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            "group": {
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                "name": "DSP - GoProWo",
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        {
            "id": 72565,
            "name": "Nine*Nine, NineNineNine",
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            },
            "description": "<h2 style=\"color:red\">999 Rounds of 9x9</h2>\n\nThis is another silly tournament, this time it's 9x9 but with lots and lots of rounds (if it even works).\n\nGames themselves are meant to be relatively quick.\n\nUsing \"pause\" may result in disqualification if it holds the tournament from advancing to the next round.\n\nIf only one active player is left, the tournament is ended prematurely, I think. In a way, this is a survival tournament.\n\nInspired by The Nonary Games.",
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                "id": 6124,
                "name": "Leopard's Resting Tree",
                "summary": "A little corner for cat tournaments",
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        {
            "id": 16966,
            "name": "(Orthodox) Easter Bunny Tournament",
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                "username": "udhar_nabresh",
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            "description": "A bag full of chocolate eggs ...",
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            "time_start": "2016-04-30T22:01:00Z",
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            "subsequent_pairing_method": "slaughter",
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            "max_ranking": 23,
            "analysis_enabled": false,
            "exclusivity": "open",
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        {
            "id": 100147,
            "name": "Let's Go! 🙂  Round Robin 3kyu-8kyu",
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                "username": "jeroentjeb",
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