List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-players_start&page=5546
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=-players_start&page=5545",
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                "summary": "Un petit groupe pour les BG qui jouent au go. Vous êtes un BG? Alors ne trahissez pas les peu de BG qu'il y a dans le monde et soyez à votre PRIME!",
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