v4.1.5
Improve integration tests (stability + performance) (#15125)
Update test to retry assertion on empty file and don't include forward-slash in the assertion (#17821)
Make `@reference` emit variable fallbacks instead of CSS variable declarations (#16774)
Fix slow incremental builds (especially on Windows) (#17511)
Use `@layer properties` for `@property` polyfills (#17506)
Enable URL rewriting for PostCSS (#16965)