Medium size release, containing many internal refactorings as well as the last missing piece of basic hole punching, namely libp2p-dcutr. To try out hole punching yourself, follow the tutorial.

Most notable breaking changes:

• Fold libp2p-core's Network into Swarm. See [PR 2492].

  Along with this change, many types are now exposed through libp2p-swarm instead of libp2p-core. When in doubt, change libp2p::core:: to libp2p::swarm::.

  See libp2p-swarm CHANGELOG.md.

• Merge NetworkBehaviour's inject_* paired methods (see PR 2445).

  See libp2p-swarm CHANGELOG.md.

• • Rename ProtocolsHandler to ConnectionHandler. Upgrade should be as simple as renaming all occurences of ProtocolsHandler to ConnectionHandler with your favorite text manipulation tool across your codebase. See [PR 2527].

  See libp2p-swarm CHANGELOG.md.

See individual changelogs for details.