cabi listen needs a future or stream, so add a function that produces
a future from a timer, allowing it to be waited for by cabi wait.
An alternative would be to have the new function return a future
directly, rather than a resource, however that wouldn't support reading
the current time from a timer.
cabi listen needs a future or stream, so add a function that produces a future from a timer, allowing it to be waited for by cabi wait.
An alternative would be to have the
newfunction return a future directly, rather than a resource, however that wouldn't support reading the current time from a timer.Fixes #18.