docs: update changelog

Author: glennsl

CHANGELOG.md

@@ -5,6 +5,7 @@
 - Add `Dict.forEach`, `Dict.forEachWithKey` and `Dict.mapValues` https://github.com/rescript-association/rescript-core/pull/181
 - Remove internal xxxU helper functions that are not needed anymore in uncurried mode. https://github.com/rescript-association/rescript-core/pull/191
 - Rename `Object.empty` to `Object.make` for consistency.
+- Add proper options types in `Intl` modules.
 
 ## 1.0.0