The following changes have been applied to my Google Pixelbook:
* 2018-12-16: For some reason the WiFi radio just stopped working on the Pixelbook. I rebooted and WiFi was restored. It acted as though it didn't see any networks and all connectivity was lost.
* 2018-12-25: Got the HooToo USB-C Hub for Christmas
* 2018-12-17: Version 71.0.3578.98 
installed. Partnered my Pixel 2 with the Pixelbook
* 2019-01-15: Version 71.0.3578.127 installed
* 2019-01-18: Installed Docker In Crostini
* 2019-01-31: Installed Mailspring
* 2019-02-02: After observing stutters and observing top, I decided to uninstall Mailspring
* 2019-02-12: Version 72.0.3626.97 installed. See my Chrome OS 72.0.3626.97 Notes
* 2019-02-17: Paired with a Logitech Bluetooth mouse; witnessed problems with Pixelbook and Bluetooth. Now using the OWC USB-C Dock
* 2019-02-23: Add Dropbox To Pixelbook
* 2019-02-17: Chrome OS Version 72.0.3626.117 installed; USB support not working as expected.
* 2019-03-07: Updated to Chrome OS Version 72.0.3626.122
* 2019-03-29: Updated to Chrome OS Version 73.0.3683.88
* 2019-05-07: Updated to Chrome OS Version 74.0.3729.125
* 2019-05-12: Crostini Failure After Chrome OS 74 Upgrade
* 2019-08-17: Updated to Chrome OS Version 76
* 2019-11-08: Numerous upgrades to Chrome OS over the year, now running Chrome OS Version 78