`any` module is no longer public

[DaughterOfMars]

In 1.0.0-beta.2, the any module is now private and only CloneAny is exported, meaning the Downcast trait is no longer visible.

[soufianexmx]

same here, couldn't use something like:

struct Event<T, Obs: Observable + Any + UncheckedAnyExt> {
    time: time::Time<T>,
    observables: Map<Obs>,
}