1 key キーボード
https://github.com/arai-ta/qmk_firmware/compare/fc2b51194c58140b096b4c953c703b7f3f6f1fbc...8da94ddbea9a025babc92e1db3eea162dceefa21
https://gyazo.com/aa00cc84ba4e6c1816dd8750c8a8c849