-Change option -p to accept lists of headers and parameters:
--p h1,h2,h3:p1,p2,p3
-Allow * and exceptions:
--p h1,h2,h3:*,-p1,-p2,-p3
--p *,-h1,-h2,-h3:p1,p2,p3
--p *,-h1,-h2,-h3:*,-p1,-p2,-p3
+Add options --save-headers, --save-body and --save-message to save
+decoded headers/bodies/messages of parts to files.