As a reminder, the latest version should be copied from here: https://script.google.com/d/1BOk8MDLbLaHh6SwG1M1tsgNXjkcC-79LE0QoipRuTDxbO3fMVvqoROQD/edit?usp=sharing
Variety of fixes for exponential backoff retries for failed requests, issues with some events affecting other synced calendars, and limiting permissions requested by the script.
Fixes included in this release: 5.5...5.6