chore: Prepare for 0.4 release

Author: bahlo

CHANGELOG.md

@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0] - 2025-07-20
+
 ### Changed
 
 - Make `pnet` a feature (enabled by default). This can be turned off if there's

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "sonyflake"
-version = "0.3.0"
-authors = ["Arne Bahlo <hallo@arne.me>"]
+version = "0.4.0"
+authors = ["Arne Bahlo <hey@arne.me>"]
 license = "MIT OR Apache-2.0"
 description = "A distributed unique ID generator inspired by Twitter's Snowflake"
 repository = "https://github.com/bahlo/sonyflake-rs"