v0.4.0

What's Changed

• Style: add rustfmt.toml and reformat by @George-Miao in https://github.com/Berrysoft/compio/pull/15
• Close bracket in Cargo.toml by @George-Miao in https://github.com/Berrysoft/compio/pull/16
• Impl sync_all & sync_data. by @Berrysoft in https://github.com/Berrysoft/compio/pull/18
• Add IO extension methods. by @Berrysoft in https://github.com/Berrysoft/compio/pull/21
• runtime dependencies are optional, once_cell is needed only for Rust … by @DXist in https://github.com/Berrysoft/compio/pull/19
• Fix warnings by @Berrysoft in https://github.com/Berrysoft/compio/pull/25
• Bind to unspecified addr before connect. by @Berrysoft in https://github.com/Berrysoft/compio/pull/26
• Refactor: use Key<T> to replace user_data: usize by @George-Miao in https://github.com/Berrysoft/compio/pull/23
• Refactor *RawFd traits by @Berrysoft in https://github.com/Berrysoft/compio/pull/27
• Use eventfd to implement signal. by @Berrysoft in https://github.com/Berrysoft/compio/pull/29
• Fix warnings. by @Berrysoft in https://github.com/Berrysoft/compio/pull/34

New Contributors

• @George-Miao made their first contribution in https://github.com/Berrysoft/compio/pull/15
• @DXist made their first contribution in https://github.com/Berrysoft/compio/pull/19

Full Changelog: Berrysoft/compio@v0.3.0...v0.4.0