/validate-changelog

Validate CHANGELOG.md format compliance with "Keep a Changelog" standard.

## Operation: Validate CHANGELOG Format

Validate CHANGELOG.md format compliance with "Keep a Changelog" standard.

### Parameters from $ARGUMENTS

- **file**: Path to CHANGELOG file (optional, default: CHANGELOG.md)
- **format**: Expected format (optional, default: keepachangelog)
- **strict**: Enable strict validation (optional, default: false)
- **require-unreleased**: Require [Unreleased] section (optional, default: true)

### CHANGELOG Requirements

**Keep a Changelog Format** (https://keepachangelog.com/):



**Required Elements**:
1. **Title**: "Changelog" or "Change Log"
2. **Versio...