DisplayChanger customization point

[Alan Griffiths]

On 21/11/14 01:37, Daniel van Vugt wrote:
> I'm not convinced *DisplayChanger are good abstractions. If you're
> touching them then maybe we can think of a cleaner way to approach the
> task of changing displays :)

Yes, Alexandros made a similar point yesterday. I'm not yet clear on the
right abstractions - so any constructive suggestions are welcome.