Merge the changes from polkadot-2 into master #446
Merged
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As per IRL discussion, we decided to merge the changes I made for substrate into master.
This is more or less the same as #355 plus some changes to
UniqueConnecand connection reuse's API.This is a breaking change, as the methods of
UniqueConnecchanged name, andConnectionReusenow requires the input to be of the format(a, muxer)and will produce a(a, substream). Theais simply cloned around and can be used to pass data through (such as the node's public key).