ChangeLog notes Rust experiment

Author: snim2

CHANGELOG.md

@@ -6,9 +6,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## Added
+- Cargo tooling for Rust
+
 ### Changed
 - Use current dxw Git URIs for documentation and tests
 
+### Removed
+- PHP version of Whippet
+
 ## [v2.5.0] - 2024-07-24
 
 ### Added