You can kinda do it with the Xposed framework and XHaloFloatingWindow (http://repo.xposed.info/module/com.zst.xposed.halo.floatingwindow http://repo.xposed.info

You can kinda do it with the Xposed framework and XHaloFloatingWindow (http://repo.xposed.info/module/com.zst.xposed.halo.floatingwindow http://repo.xposed.info/module/com.zst.xposed.halo.floatingw...). You can snap applications at borders and have a bar between to resize them, kinda like a tiling manager. But from my experience, it's not nearly as good as a tiling window manager, or even Windows on a tablet.