Summary

Added GitHub token authentication support to prevent API rate limiting issues when accessing GitHub repositories.

Changes

• Added get_authenticated_headers() function that reads GITHUB_TOKEN from environment variables
• Updated all HTTP requests to use authenticated headers instead of static headers
• Maintains backward compatibility - works with or without token

Benefits

• Prevents GitHub API rate limiting when downloading requirements.txt and environment.yml files
• Improves reliability for users processing multiple repositories
• No breaking changes to existing functionality

Usage

Set the GITHUB_TOKEN environment variable with a valid GitHub personal access token to enable authentication.