List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=player_count&page=5527
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "9x9 32 Reasons To Cry (╥﹏╥)",
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                "name": "New Zealand Tournaments",
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                "summary": "Sharing experience is our main goal.",
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