libp2p-plaintext 0.27.1

Plaintext encryption dummy protocol for libp2p
Documentation
# 0.27.1 [2021-02-15]

- Update dependencies.

# 0.27.0 [2021-01-12]

- Update dependencies.

# 0.26.0 [2020-12-17]

- Update `libp2p-core`.

# 0.25.0 [2020-11-25]

- Update `libp2p-core`.

# 0.24.1 [2020-11-11]

- Ensure that no follow-up protocol data is dropped at the end of the
  plaintext protocol handshake.
  [PR 1831]https://github.com/libp2p/rust-libp2p/pull/1831.

# 0.24.0 [2020-11-09]

- Update dependencies.

# 0.23.0 [2020-10-16]

- Improve error logging
  [PR 1759]https://github.com/libp2p/rust-libp2p/pull/1759.

- Update dependencies.

- Only prefix handshake messages with the message length in bytes as an unsigned
  varint. Return a plain socket once handshaking succeeded. See [issue
  1760](https://github.com/libp2p/rust-libp2p/issues/1760) for details.

# 0.22.0 [2020-09-09]

- Bump `libp2p-core` dependency.

# 0.21.0 [2020-08-18]

- Bump `libp2p-core` dependency.

# 0.20.0 [2020-07-01]

- Updated dependencies.

# 0.19.1 [2020-06-22]

- Updated dependencies.