libp2p-identify 0.30.0

Nodes identifcation protocol for libp2p
Documentation
# 0.30.0 [2021-07-12]

- Update dependencies.

# 0.29.0 [2021-04-13]

- Add support for configurable automatic push to connected peers
  on listen addr changes. Disabled by default.
  [PR 2004]https://github.com/libp2p/rust-libp2p/pull/2004

- Implement the `/ipfs/id/push/1.0.0` protocol.
  cf. https://github.com/libp2p/specs/tree/master/identify#identifypush
  [PR 1999]https://github.com/libp2p/rust-libp2p/pull/1999

- Emit `IdentifyEvent::Pushed` event after successfully pushing identification
  information to peer [PR
  2030](https://github.com/libp2p/rust-libp2p/pull/2030).

# 0.28.0 [2021-03-17]

- Update `libp2p-swarm`.

- Update dependencies.

# 0.27.0 [2021-01-12]

- Update dependencies.

# 0.26.0 [2020-12-17]

- Update `libp2p-swarm` and `libp2p-core`.

# 0.25.0 [2020-11-25]

- Update `libp2p-swarm` and `libp2p-core`.

# 0.24.0 [2020-11-09]

- Update dependencies.

# 0.23.0 [2020-10-16]

- Update `libp2p-swarm` and `libp2p-core`.

# 0.22.0 [2020-09-09]

- Update `libp2p-swarm` and `libp2p-core`.

# 0.21.0 [2020-08-18]

- Bump `libp2p-core` and `libp2p-swarm` dependencies.

# 0.20.0 [2020-07-01]

- Updated dependencies.

# 0.19.2 [2020-06-22]

- Updated dependencies.