Add 0.8.1 changelog.

CHANGELOG.md

@@ -8,6 +8,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - No unreleased changes.
 
+## [0.8.1] - 2022-05-12
+
+- Remove unused `rand_core` dep. ([#589](https://github.com/smoltcp-rs/smoltcp/pull/589))
+- Use socklen_t instead of u32 for RawSocket bind() parameter. Fixes build on 32bit Android. ([#593](https://github.com/smoltcp-rs/smoltcp/pull/593))
+- Propagate phy::RawSocket send errors to caller ([#588](https://github.com/smoltcp-rs/smoltcp/pull/588))
+- Fix Interface set_hardware_addr, get_hardware_addr for ieee802154/6lowpan. ([#584](https://github.com/smoltcp-rs/smoltcp/pull/584))
+
 ## [0.8.0] - 2021-12-11
 
 - Minimum Supported Rust Version (MSRV) **bumped** from 1.40 to 1.56
@@ -133,6 +140,7 @@ only processed when directed to the 255.255.255.255 address. ([377](https://gith
 - Simplify lifetime parameters of sockets, SocketSet, EthernetInterface ([410](https://github.com/smoltcp-rs/smoltcp/pull/410), [413](https://github.com/smoltcp-rs/smoltcp/pull/413))
 
 [Unreleased]: https://github.com/smoltcp-rs/smoltcp/compare/v0.7.0...HEAD
+[0.8.1]: https://github.com/smoltcp-rs/smoltcp/compare/v0.8.0...v0.8.1
 [0.8.0]: https://github.com/smoltcp-rs/smoltcp/compare/v0.7.0...v0.8.0
 [0.7.5]: https://github.com/smoltcp-rs/smoltcp/compare/v0.7.4...v0.7.5
 [0.7.4]: https://github.com/smoltcp-rs/smoltcp/compare/v0.7.3...v0.7.4