Prepare 0.4.0

Author: Rahix

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+
+## [0.4.0] - 2023-08-13
 ### Changed
 - **BREAKING** Upgraded to `shared-bus` 0.3.
 
@@ -59,7 +62,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 Initial Release, with support for `PCA9536`, `PCA9555`, `PCF8574`, and
 `PCF8574A`.
 
-[Unreleased]: https://github.com/rahix/port-expander/compare/v0.3.1...HEAD
+[Unreleased]: https://github.com/rahix/port-expander/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/rahix/port-expander/compare/v0.3.1...v0.4.0
 [0.3.1]: https://github.com/rahix/port-expander/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/rahix/port-expander/compare/v0.2.1...v0.3.0
 [0.2.1]: https://github.com/rahix/port-expander/compare/v0.2.0...v0.2.1

Cargo.toml

@@ -8,7 +8,7 @@ readme = "README.md"
 keywords = ["i2c", "shared-bus", "pca", "pcf", "gpio"]
 categories = ["embedded", "no-std", "hardware-support"]
 
-version = "0.3.1"
+version = "0.4.0"
 
 edition = "2021"