I have the whole thing mostly working. It's very nice, responsive, snappy... but it can't work under the current rules of the platform. UWP apps do not allow you to access the clipboard whilst the app is minimized, or whilst your app is not snapped in tablet mode. Until this restriction is lifted, I won't be able to release the UWP app. I don't know if Microsoft will lift this restriction.
If you would like Microsoft to resolve this issue, please upvote my feedback here