List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=min_ranking&page=5815
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=min_ranking&page=5814",
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        },
        {
            "id": 810,
            "name": "ahl7's mini-tournament pain beurre 2",
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                "username": "ahl7",
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        },
        {
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            "ended": "2007-10-31T23:31:00Z",
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            "active_round": null,
            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 0,
            "ranked": true
        },
        {
            "id": 115995,
            "name": "On the SDK bubble II - fast round robin",
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                "username": "Babbo Bruno",
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                "ui_class": "supporter"
            },
            "description": "This is a faster tournament - three plays per day - use conditional moves to keep up.",
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                "name": "Double Digit Kyu Room",
                "summary": "For those of us working our way through to SDK. Whether its for your first time up the ladder and the 20th, lets find some opponents and camaraderie. ",
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                "hide_details": false,
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            "ranked": true
        },
        {
            "id": 2001,
            "name": "Let's play!",
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                "id": 41015,
                "username": "nomadfarmer",
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                "professional": false,
                "ui_class": ""
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            },
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            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
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        },
        {
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        },
        {
            "id": 50003,
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                "name": "Go World Wide",
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