[Feature request] Add event trigger to change wallpaper

[M7amma]

I'm using Nova launcher which has the ability to make home screen swipes to trigger any action through events that implemented in apps. For Paperize, I want to change my wallpaper by manually swiping on home screen but this will require a trigger for 'wallpaper change event' to be set for this swipe. So can you please add it to the app?