Should Duration be re-exported to allow for impl of HostWallClock?

[alexanderkjeldaas]

wasmtime-wasi/src/clocks.rs

use cap_std::time::Duration;

pub trait HostWallClock: Send {
    fn resolution(&self) -> Duration;
    fn now(&self) -> Duration;
}

Should Duration be exported from the wasi library to allow implementation of this trait?

[alexcrichton]

I believe cap_std::time::Duration is itself a reexport of std::time::Duration, although adding a reexport to wasmtime-wasi also seems ok.