v1.2.0

Form-Mailly-Go V2.0.0

Added

• Custom validation engine without external dependencies
• Comprehensive email validation with 15+ distinct checks
• Security headers middleware (CSP, XSS protection, HSTS)
• Configuration validation
• Structured error response format

Changed

• BREAKING: JSON response format standardized
• BREAKING: Stricter email validation rules
• BREAKING: All environment variables now required
• Validation errors now return 400 with specific messages

Fixed

• Potential XSS vulnerabilities in email template
• UTF-8 length validation issues
• SMTP connection reuse problems
• Case-sensitive domain validation