chore: release 0.4.0

CHANGELOG.md

@@ -4,11 +4,11 @@ All notable changes to this project will be documented in this file.
 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]
 
 ### Breaking
 - username and password authentaction have been removed and are replaced by OAuth ([#1321])
-  Look at the [docs](https://docs.spotifyd.rs) for setup instructions.
+  Look at the [docs] for setup instructions.
 
 ### Added
 - retry enabling discovery several times before exiting ([#1228])
@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - the docs have been overhauled to reflect the current state of the project and simplify onboarding ([#1327])
 - `librespot` dependency has been updated to 0.6 ([#1317])
 - Credential caching has been re-enabled. ([#1214])
+- the readability of the output has been improved ([#1332])
 
 ### Fixed
 - alsa mixer: volume calculation has been fixed ([#1229])
@@ -43,6 +44,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#1321]: https://github.com/Spotifyd/spotifyd/pull/1321
 [#1327]: https://github.com/Spotifyd/spotifyd/pull/1327
 [#1332]: https://github.com/Spotifyd/spotifyd/pull/1332
+[docs]: https://docs.spotifyd.rs/
 
 ## [0.3.5]