Thanks for Editorial, it's a great app.
It would be significantly more useful, however, if on devices supporting iOS 9's new split screen and pop-over (slide-out) modes, users were able to run the app side-by-side with other apps, browsers, etc.
I believe it's a really important feature - and it's one offered by a number of apps on iOS now, as well as being supported by most currently retailed iPad models (and assuredly all future models too).
Editorial is already a powerhouse, but there are definitely situations where I'm having to use a competitor's product when split-screening, instead of Editorial.