* Consolidate keypairs in core.
Introduce the concept of a node's identity keypair in libp2p-core,
instead of only the public key:
* New module: libp2p_core::identity with submodules for the currently
supported key types. An identity::Keypair and identity::PublicKey
support the creation and verification of signatures. The public key
supports encoding/decoding according to the libp2p specs.
* The secio protocol is simplified as a result of moving code to libp2p-core.
* The noise protocol is slightly simplified by consolidating ed25519
keypairs in libp2p-core and using x25519-dalek for DH. Furthermore,
Ed25519 to X25519 keypair conversion is now complete and tested.
Generalise over the DH keys in the noise protocol.
Generalise over the DH keys and thus DH parameter in handshake patterns
of the Noise protocol, such that it is easy to support other DH schemes
in the future, e.g. X448.
* Address new review comments.
Initially I had hoped that the deprecated `#![allow(clippy)]` would no
longer be put into the generated rust files, but -- as of 2019-01-30 --
it still is (see [1] for details). Since we explicitly update the
protobuf files I decided to *manually edit the generated code* and
replace this with `#![allow(clippy:all)]`. Hopefully, by the time we do
the next upgrade, no such manual tweaking would be necessary anymore. I
think the benefit of a less polluted clippy output is worth it this
time.
[1]: https://github.com/stepancheg/rust-protobuf/pull/332
* Embed the topology in the NetworkBehaviour
* Put topologies inside of Floodsub and Kad
* Fix core tests
* Fix chat example
* More work
* Some cleanup
* Restore external addresses system
Update the protocols and transport subdirectories to the 2018 edition.
NB: The websocket transport cannot be moved to 2018 edition due to
websocket-rs's use of the keyword async as the name of a module.
* Add an Error associated type to transports
* Improve raw swarm a bit
* Rename map_other to map
* Use source() instead of cause()
* RawSwarmIncErr -> IncomingError
* Replace the &mut TTopology with a &mut PollParameters
* Add supported_protocols
* Add external_addresses
* Report out addresses in Kademlia
* Fix the custom derive
* Some comments
* Fix compilation on stable
