10 GitHub, Travis, AppVeyor, PyPI.
16 Process message/delivery-status and text/rfc822-headers subparts.
19 Never decode subparts of multipart/encrypted and multipart/signed messages but
20 allow processing of headers of the top-level part, ignoring the top-level part
21 with -I, aborting it with -e or saving the part or subparts with --save-*.
24 Convert dates to the current locale and timezone (with an option?)
27 Allow -d and -p accept shell-like patterns and/or regular expressions:
28 -d content-*,-content-*-encoding
31 Add option --save-as='%format' to generate names for --save-* files. Develop
32 a DSL to conditionally use values of headers, parameters and the counter.