All data is stored in the [/data](data) folder as [CSV](https://en.wikipedia.org/wiki/Comma-separated_values) (Comma-separated values) files and can be edited with any spreadsheet editor (such as [Google Sheets](https://www.google.com/sheets/about/), [LibreOffice](https://www.libreoffice.org/discover/libreoffice/), ...).