pub async fn check_for_update()Expand description
Best-effort, throttled “new version available” check against crates.io.
It never fails the caller and never blocks for long: the network is queried
at most once per [CHECK_INTERVAL_SECS] (the result is cached on disk), and
a short notice is printed to stderr whenever the cached latest version is
newer than the running one. Set ROBIN_NO_UPDATE_CHECK to disable it.