Look up the time through trait Runtime

[Ralith]

Allows end-to-end testing with a simulated flow of time, improving determinism and allowing extreme latencies to be modeled more easily. Inspired by @marcblanchet's multi-day experiments with simulated latencies for deep space networking.

[marcblanchet]

thanks a lot! (FYI, we have a running simulation with 5 days one-way delay. takes a month to get the results! so any improvement here would be so useful!

[flub]

Nice! This can probably also help with android sleep issues messing up timing.