Bump up version number to 0.4.0

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased] - ReleaseDate
 
+## [0.4.0] - 2021-01-22
+
 ### Added
 
 - The client can now be shut down with the `disconnect` function and will do so automatically on
@@ -74,7 +76,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release.
 
-[Unreleased]: https://github.com/dnaka91/obws/compare/v0.3.0...HEAD
+[Unreleased]: https://github.com/dnaka91/obws/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/dnaka91/obws/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/dnaka91/obws/compare/v0.2.0...v0.3.0
 [0.2.0]: https://github.com/dnaka91/obws/compare/v0.1.0...v0.2.0
 [0.1.0]: https://github.com/dnaka91/obws/releases/tag/v0.1.0

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "obws"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Dominik Nakamura <dnaka91@gmail.com>"]
 edition = "2018"
 license = "MIT"

README.md

@@ -25,7 +25,7 @@ Add `obws` to your project with `cargo add obws` (needs [cargo-edit]) or add it
 
 ```toml
 [dependencies]
-obws = "0.3.0"
+obws = "0.4.0"
 ```
 
 In addition, you will need to use the [tokio](https://tokio.rs) runtime (currently `v0.3.x`), to