compiletest: update changelog

Author: jieyouxu

src/tools/run-make-support/CHANGELOG.md

@@ -10,6 +10,12 @@ changes to the support library).
 This support library will probably never reach 1.0. Please bump the minor version in `Cargo.toml` if
 you make any breaking changes or other significant changes, or bump the patch version for bug fixes.
 
+## [0.2.0] - 2024-06-09
+
+### Changed
+
+- Marked many functions with `#[must_use]`, and rmake.rs are now compiled with `-Dmust_use`.
+
 ## [0.1.0] - 2024-06-09
 
 ### Changed