List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-first_pairing_method&page=240
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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                "summary": "This group exists as a place to enjoy weekly tournaments with competitively minded players using the lesser known but arguably strategically superior New Zealand rule set. All are welcome here ヽ(≧◡≦)ノ",
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            "started": "2020-07-12T09:42:24.160398Z",
            "ended": "2021-03-16T04:51:06.085138Z",
            "start_waiting": "2020-07-12T09:42:24.006822Z",
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}