At April 8, 2019, the specification of Google Apps Script Project was changed. Various specification was changed. Please see the detail at Google Cloud Platform Projects. Here, I would like to introduce one change which might be useful for users. The official document says as follows.
When you enable an advanced service for your script project in the Apps Script editor, it is automatically enabled in the default GCP project when the script project is saved.
For example, when users want to use Sheets API at Advanced Google Services, they were required to enable Sheets API at both Advanced Google Services and API console, so far.
But now, when users want to use Sheets API at Advanced Google Services, they can use it by enabling only Advanced Google Services. I think that this is a big change and it will be useful for a lot of users. So I introduced it.