List all tournaments or create a new tournament.

GET /api/v1/tournaments/?ordering=-exclusivity&page=5614
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/?ordering=-exclusivity&page=5613",
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            "description": "We have grown! This is a chance for some new members to jump into a tournament. Let's see how many of our 80 members we can get to join! Come on everyone!",
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