Add the change log for some previous versions

Content copied from: https://github.com/huanshankeji/compose-multiplatform-material/releases/tag/v0.2.0 and https://github.com/huanshankeji/compose-multiplatform-material/releases/tag/v0.3.0.

Author: ShreckYe

CHANGELOG.md

@@ -48,3 +48,11 @@
 ### Demo
 
 * make the demo UI fridendly on mobile
+
+## v0.3.0 / 2024-5-10
+
+Support Material 3. See the Updated README.md for more details.
+
+## v0.2.0 / 2024-4-17
+
+The project now depends on Kobweb Silk on Kotlin/JS (Compose HTML) and there is a universal multiplatform interface for `Modifier`, scopes, etc. akin to those in `androidx.compose`. Obselete code including `ModifierOrAttrsScope` is moved to a legacy module.