Important changes:
-- added fexit (Windows client) and macfexsend (MacOS client) support
+- recipient address can have attached :options (keep,autodelete,locale)
+
+- added config variable @extra_header with default HTTP security headers,
+ see: https://securityheaders.io/?q=http%3A%2F%2Ffex.belwue.de
+
+- dynamic HTML runs in own Perl namespace (DOP)
- fixed various bugs