Add CHANGELOG.md with 1.3.0 release notes

Author: emoon

CHANGELOG.md

@@ -0,0 +1,17 @@
+# Changelog
+
+All notable changes to RocketEditor will be documented in this file.
+
+## [1.3.0] - 2025-11-30
+
+### Added
+- Command-line support for loading .rocket files on startup (all platforms)
+- macOS universal binary support (x86_64 + arm64)
+- Version display now shows git tag for releases, "Development" for dev builds
+
+### Changed
+- Replaced BASS audio library with minimp3 + kissfft for audio decoding (no more proprietary dependencies)
+- Switched build system to CMake
+
+### Fixed
+- Various build warnings and CI improvements

README.md

@@ -18,6 +18,8 @@ Here are the links to the current version of the editor:
 * macOS: https://www.dropbox.com/s/toaiyfgzue9fm2v/RocketEditor1.2beta.zip?dl=1
 * Windows: https://www.dropbox.com/s/ounkv6bcou5pgwe/RocketEditor1.2beta-Win.zip?dl=1
 
+See [CHANGELOG.md](CHANGELOG.md) for version history.
+
 About
 -----