-pip.
+Python 3.
-Upgrade docbook-xsl.
+
+Never decode subparts of multipart/encrypted and multipart/signed messages but
+allow processing of headers of the top-level part, ignoring the top-level part
+with -I, aborting it with -e or saving the part or subparts with --save-*.
+
+
+Convert dates to the current locale and timezone (with an option?)
+
+
+Allow -d and -p accept shell-like patterns and/or regular expressions:
+-d content-*,-content-*-encoding
+
+
+Add option --save-as='%format' to generate names for --save-* files. Develop
+a DSL to conditionally use values of headers, parameters and the counter.