feat: bump embassy-sync version to 0.3.0

Update changelog in preparation for release

embassy-sync/CHANGELOG.md

@@ -5,6 +5,13 @@ 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).
 
+## 0.3.0 - 2023-09-14
+
+- switch to embedded-io 0.5
+- add api for polling channels with context
+- standardise fn names on channels
+- add zero-copy channel
+
 ## 0.2.0 - 2023-04-13
 
 - pubsub: Fix messages not getting popped when the last subscriber that needed them gets dropped.
@@ -19,4 +26,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## 0.1.0 - 2022-08-26
 
-- First release
+- First release

embassy-sync/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "embassy-sync"
-version = "0.2.0"
+version = "0.3.0"
 edition = "2021"
 description = "no-std, no-alloc synchronization primitives with async support"
 repository = "https://github.com/embassy-rs/embassy"