Plasma 5: Roadmap post 5.0

[David Edmundson]

> I think that plasma releases can follow KF5, we could get at least 5.0.1 in
> August 15th and 5.0.2 in September 15th.
>
> About Plasma 5.1, did we agree on a 3-month schedule?
>
+1 to that.