Update changelog

Author: steelman

CHANGELOG.md

@@ -10,6 +10,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Update `clap` to 4.0, use `irx-config` instead of `clap_conf`
 - Add #[must_use] to prevent hanging field writers
 - remove explicit deref in `generic.rs` since it's done by auto-deref
+- Make writing raw bits to a whole register safe if the SVD indicates
+  so through the <WriteConstraint> element (see [v0.7.1] too).
 
 ## [v0.26.0] - 2022-10-07