List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-time_per_move&page=1501
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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            "description": "Deuxieme tournoi, j'ai appris de mes erreurs, celui-ci sera double élimination!\n\nSi vous perdez un match, pas de panique, vous aurez une deuxième chance. Par contre, si vous perdez 2 matchs, vous êtes disqualifiés.\n\nÀ qui la victoire? J'ai hâte de savoir!",
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            "description": "Hi everyone",
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