Implement key attribute from screen spec

[Geertiebear]

Involves closing the screen on key press.

[hhirsch]

@Geertiebear How should this be changed from the key attribute? https://github.com/GlPortal/specification/blob/master/formats/screen.md

[Geertiebear]

What do you mean?

[hhirsch]

@Geertiebear The current spec contains the key attribute that does just that. What should be changed?

[Geertiebear]

In the spec? Nothing In the engine? Implement it

[hhirsch]

Thanks for clarifying now I get it.