Windows Terminal Preview 1.17 Release

One of the other big features to land in this release (that didn't make the blog) was the ability for the Terminal to sync the color scheme & theme to the Windows OS theme

https://user-images.githubusercontent.com/18356694/214559480...

When Themes were added in 1.16, this was one of the biggest requests, so I'm really excited to see all the moving parts for it come together in just one release.