v4.0.4

What's Changed

• send(): stream the export zip in 8 KB chunks instead of readfile() so large exports do not exhaust memory_limit when delivering the archive
• zip_folder() now throws RuntimeException instead of calling wp_die() directly, so the existing try/catch in export() renders a friendly error page and runs cleanup() on partial temp files
• New jekyll_export_html_converter filter lets integrations (and tests) swap in a custom HTML-to-Markdown converter
• The fallback error_log() added in v4.0.3 is now gated behind WP_DEBUG
• Hardened sanitization of $_GET['type'] in the export callback
• Added regression tests for the v4.0.3 Invalid HTML was provided fallback and the new zip_folder() throw behavior

Full Changelog: v4.0.3...v4.0.4