List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-board_size&page=5669
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "Hey! Check out our 19x19 celebration version & 13x13 version!\n\n19x19 has all the celebration quotes! And a shoutout, too!\n\nHooray! XD",
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