Windows Terminal Preview 1.6 Release

This is probably the biggest terminal release since we first announced, and the whole team did a lot of great work with it.

Obviously, the headline feature is the settings UI. Since we first launched, that's been one of our most popular feature requests, and it's great to finally see it land. For folks who like the simplicity of a json file (myself included), that's not going anywhere. But I'll admit, the UI is nice for quick settings toggles.

Low key the feature i think that has the most potential is the pixel shaders. I'm not a hlsl wizard, but I've seen some incredible things done with it. I'm looking forward to the crazy things people can come up with, and optimizing that more in the future.