This is an excerpt of Sources by Alex Heath , a newsletter about AI and the tech industry, syndicated just for The Verge subscribers once a week. To understand how Microsoft sees its role in the AI race, look at what was announced at the company’s GitHub Universe developer conference on Tuesday in San Francisco. The event marked a turning point for one of Microsoft’s most important but often under-analyzed assets. GitHub, which is used by more than 180 million developers, wants to be the