Replace async-std with async-net and other smol components
The main weight is now carried by async-io, which has already been a dependency since bcf704e2.
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Closes: !6 (closed)
(I think this does all that the latest stage of that stalled PR did; @ivmarkov, can you confirm that?)
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Closes: #2 (closed)
(especially it does update async-io to 2.0 as requested there; it leaves the nix issue unresolved, but that was not the main issue there, please open a new issue for nix-less if other platforms have other ways of getting the local address)
Edited by chrysn