…td::error::Error` (libp2p#2710)

* core/muxing: Remove `Into<io::Error>` bound from `StreamMuxer::Error`

This allows us to preserve the type information of a muxer's concrete
error as long as possible. For `StreamMuxerBox`, we leverage `io::Error`'s
capability of wrapping any error that implements `Into<Box<dyn Error>>`.

* Use `?` in `Connection::poll`

* Use `?` in `muxing::boxed::Wrap`

* Use `futures::ready!` in `muxing::boxed::Wrap`

* Fill PR number into changelog

* Put `Error + Send + Sync` bounds directly on `StreamMuxer::Error`

* Move `Send + Sync` bounds to higher layers

* Use `map_inbound_stream` helper

* Update changelog to match new implementation

…p#2726)

Print remote peer ID when seeing a second identify push stream coming in.

…p#2727)

…ibp2p#2696) (libp2p#2701)

See e04e95a for the rational.

With tokio `v1.19.0` released, `TcStream` exposes `take_error`.

This commit applies the same fix from e04e95a to the tokio TCP provider.

…ibp2p#2731)

Bumps [styfle/cancel-workflow-action](https://github.com/styfle/cancel-workflow-action) from 0.9.1 to 0.10.0.
- [Release notes](https://github.com/styfle/cancel-workflow-action/releases)
- [Commits](styfle/cancel-workflow-action@a40b884...bb6001c)

---
updated-dependencies:
- dependency-name: styfle/cancel-workflow-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* protocols/gossipsub: Fix a typo in error message

* protocols/gossipsub: Make the error message accurately

…ibp2p#2742)

…bp2p#2733)

Allow for custom protocol ID via `GossipsubConfigBuilder::protocol_id()`.

…ect (libp2p#2744)

**Summary** of the plot of the `discover_peer_after_disconnect` test:

1. `swarm2` connects to `swarm1`.
2. `swarm2` requests an identify response from `swarm1`.
3. `swarm1` sends the response to `swarm2`.
4. `swarm2` disconnects from `swarm1`.
5. `swarm2` tries to disconnect.

**Problem**

`libp2p-identify` sets `KeepAlive::No` when it identified the remote. Thus `swarm1` might
identify` `swarm2` before `swarm2` identified `swarm1`. `swarm1` then sets `KeepAlive::No` and thus closes the
connection to `swarm2` before `swarm2` identified `swarm1`. In such case the unit test
`discover_peer_after_disconnect hangs indefinitely.

**Solution**

Add an initial delay to `swarm1` requesting an identification from `swarm2`, thus ensuring `swarm2`
is always able to identify `swarm1`.

…er (libp2p#2652)

Remove the concept of individual `Transport::Listener` streams from `Transport`.
Instead the `Transport` is polled directly via `Transport::poll`. The
`Transport` is now responsible for driving its listeners.

…iple-endpoints-2

Adapt to the transport changes of libp2p#2652.
Note: this is only a draft "to make it work", and not a proper
implementation. It does not support listening on multiple addresses.
The listening logic with multiple Endpoints will need to be supported for
the upstream implementation.

Co-authored-by: Max Inden <mail@max-inden.de>

Review fixes