Add changelog.md

changelog.md

@@ -1 +1,23 @@
-Fix cross-portal third person view rendering.
+# Changelog
+
+All notable changes to this project will be documented in this file.  
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project tries to adhere to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased Changes]
+None currently
+
+## [6.0.3](https://github.com/iPortalTeam/ImmersivePortalsModForNeo/tree/7c526fc7f1af2f339bf1611d9aa53db5f80ae91d) - 2024-10-20
+
+### Added
+
+- Initial port to NeoForge 1.21.1
+
+### Known Issues
+
+- Iris compatibility is not fully functional
+- Crash with SecurityCraft
+
+[Unreleased Changes]: https://github.com/iPortalTeam/ImmersivePortalsModForNeo/v6.0.3...HEAD
+[6.0.3]: https://github.com/iPortalTeam/ImmersivePortalsModForNeo/releases/tag/v6.0.3
+