Automatic preview of file in project

As a keyboard guy, I love being able to use the down-arrow key to move through the files in a particular project. I do wish, however, that as I move from file to file, the contents of each file would automatically be displayed in the window to the right without having to press the right-arrow key and actually move into the window. Is there a way to make that happen?

Thanks!

For reference, here’s the issue for this request:

I think the init script suggestion in https://github.com/atom/tree-view/issues/834#issuecomment-327499017 might help.