Emacs Interface
---------------
+New keymap to view/save parts
+
+ To view or save a single MIME part of a message, use the new "."
+ submap (e.g., ". s" to save, ". v" to view). Previously, these keys
+ were only available when point was on a part button and they did not
+ have the "." prefix, so they were difficult to invoke (impossible if
+ a part did not have a button) and clashed with other bindings.
+ These new bindings also appear in show's help, so you don't have to
+ memorize them.
+
+Default part save directory is now `mm-default-directory`
+
+ Previously, notmuch offered to save parts and attachments to a mix
+ of `mm-default-directory`, `mailcap-download-directory`, and `~/`.
+ This has been standardized on `mm-default-directory`.
+
No Emacs 22 support
The Emacs 22 support added late 2010 was sufficient only for a short