Google AppsScript automation project for the master conceptual model spreadsheet.
It's recommended to use the built-in IDE together with Google Apps Script GitHub Assistant.
Read the instruction before using the extension! Keep in mind that the extension doesn't support automatic sync between the project storage and GitHub repository. Therefore, you need to remember to push changes you make in the IDE. The pull feature just mimics Git pull, but is not that roboust. Pulling simply overrides local changes, so be sure to commit any local changes before pulling!