Add automated CHANGELOG section preparation for releases:
- Create ChangelogEditor class for programmatic CHANGELOG.md editing
- Implement create_version_section() to create new release sections
- Automatically move [Unreleased] content to new version section
- Add 'release prepare VERSION' CLI command to prepare CHANGELOG
- Validate CHANGELOG after edit to ensure correctness
- Support custom release dates with --date option
- Provide helpful feedback about content movement
This streamlines release preparation by automating the manual task of
creating version sections and moving unreleased changes.
Usage:
release prepare 0.11.0 # Uses today's date
release prepare 0.11.0 --date 2026-01-15
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
tegwick
5fea98b068