The race functions were not available on no_std targets. This commit
adds "with_seed" variants that take a u64 seed that is passed to
fastrand. It can be used on no_std targets to provide random racey
futures and streams.
A "race" feature is added that enables it. This way fastrand doesn't
become a dependency for crates that don't need it, like async-io.
As part of this change, each racy futures provides its own Rng instance.
The race functions were not available on no_std targets. This commit adds "with_seed" variants that take a u64 seed that is passed to fastrand. It can be used on no_std targets to provide random racey futures and streams.
A "race" feature is added that enables it. This way fastrand doesn't become a dependency for crates that don't need it, like async-io.
As part of this change, each racy futures provides its own
Rnginstance.