Most notable changes:
NetworkBehaviourEventProcess. See libp2p-swarm v0.38.0 changelog entry for
Make RSA keypair support optional. To enable RSA support,
rsafeature should be enabled.
See PR 2860.
Allow users to choose between async-io and tokio runtime
in the mdns protocol implementation.
async-iois a default
feature, with an additional
tokiofeature (see PR 2748)
For all other changes, see individual changelogs for details.
Thanks to the many folks involved!