List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-min_ranking&page=1325
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/12599",
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                "summary": "Welcome to Monday Morning group\n\nIf you feel that Mondays are mentally difficult for you, just join us and start your week with special things like playing go.",
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            "description": "Хотим игра-а-а-ть!!!",
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                "name": "Nikoniko ДЕТИ",
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        {
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            "description": "Hello <br>\nThis is the qualification phase for the European players who has a level between 14k and 10k.<br>\n(This is the group n°1. The winner of this group will play a final qualification phase against the winners of the other groups of the same category.)\n<br>\n<span style=\"color:red;\">REMEMBER THAT YOUR FLAG MUST MATCH WITH THE CONTINENT (for example, French or german flag are considered as European flags).</p>\nHave fun :)",
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                "summary": "You want to become World Champion or a Continental champion? Join us :)",
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        {
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        {
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            "name": "第9期かおり杯棋聖戦SAリーグ",
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