Update CHANGELOG.md

Author: eZioPan

CHANGELOG.md

@@ -8,8 +8,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased]
 
 - complete and rework Dma Stream API [#666]
+- add `.set_count()` for QEI, add `.write_count()` for TIM [#677]
 
 [#666]: https://github.com/stm32-rs/stm32f4xx-hal/pull/666
+[#677]: https://github.com/stm32-rs/stm32f4xx-hal/pull/677
 
 ## [v0.17.1] - 2023-07-24