Executor: Add changelog

embassy-executor/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).
 
+## Unreleased
+
+- Avoid calling `pend()` when waking expired timers
+- Properly reset finished task state with `integrated-timers` enabled
+- Introduce `InterruptExecutor::spawner()`
+- Fix incorrect critical section in Xtensa executor
+
 ## 0.2.0 - 2023-04-27
 
 - Replace unnecessary atomics in runqueue