[PATCH] xdg-shell: add enums for tiled window state to toplevel configure

[Drew DeVault]

On 2018-03-20  9:52 AM, Mike Blumenkrantz wrote:
> this adds implementation from a related discussion long ago in which
> it was decided that it would be useful for clients to know if/where their
> windows were tiled so that various behaviors and visuals could be modified
> to improve UX
> 
> a window which is e.g., tiled on the right side of the screen would set the
> right|top|bottom tiled states in configure

+1