Version 1.4 released (DKIM, X-Mailer, Enhanced URL Detection, etc)

Added

- DKIM Verification: Implemented DKIM validation to check the authenticity of email senders.
- X-Mailer Extraction: Added support for extracting the X-Mailer header, providing insight into the email client or service used.
- Email Real Sender Extraction: Replaced regex-based logic with email.utils.parseaddr() for accurate extraction of real email addresses.
- Enhanced URL Detection: Improved regex for more robust URL identification.
- Use Cases in Documentation: Introduced a detailed “Use Cases” section in the README to explain practical applications.

Improved

- Header Normalization: Preserved multi-line header continuation as per RFC 5322 standards.
- Refactored codebase for better readability and maintainability.
- Updated the real_email function for more robust handling of sender fields.
- Enhanced compatibility with modern Python versions (3.7+).
- Optimized email parsing logic for better performance.

requirements.txt

@@ -1,5 +1,5 @@
-tldextract
 py3dns
 pyspf
-beautifulsoup4
-dkimpy
+dkimpy
+tldextract
+beautifulsoup4