List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=subsequent_pairing_method&page=1630
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "級位リーグ参加希望の方は、このページのチャット欄に参加希望旨と棋力をご記載くださいm(..)m\n\n棋力に応じて参加者間で対局申請していただく形になります。(このページは大会参加希望者を募るためのみに利用し、実際の対局は、参加者間の対局申請により開始します。詳細は後日案内します。)\n\nなお、人数が多い場合は、棋力によりリーグを分割します(1リーグ8名程度目安)。",
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