https://venturebeat.com/2015/09/21/microsoft-details-edge-version-numbers-one-for-the-app-and-one-for-the-engine/
agentangelo
flipped into Windows 10
https://venturebeat.com/2015/09/21/microsoft-details-edge-version-numbers-one-for-the-app-and-one-for-the-engine/