Emacs
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+Make notmuch-message-mode use insert for fcc
+
+ Notmuch-message-mode now defaults to using notmuch insert for
+ fcc. The old file based fcc behaviour can be restored by setting the
+ defcustom `notmuch-maildir-use-notmuch-insert` to nil.
+
+ When using notmuch insert, `notmuch-fcc-dirs` must be a subdirectory
+ of the mailstore (absolute paths are not permitted) followed by any
+ tag changes to be applied to the inserted message. The tag changes
+ are applied after the default tagging for new messages. For example
+ setting the header to "sentmail -inbox +sent" would insert the
+ message in the subdirectory sentmail of the mailstore, add the tag
+ "sent", and not add the (normally added) "inbox" tag.
+
+ Finally, if the insert fails (e.g. if the database is locked) the
+ user is presented with the option to retry, ignore, or edit the
+ header.
+
+Make internal address completion customizable
+
+ There is a new defcustom `notmuch-address-internal-completion` which
+ controls how the internal completion works: it allows the user to
+ choose whether to match on messages the user sent, or the user
+ received, and to filter the messages used for the match, for example
+ by date.
+
+Allow internal address completion on an individual basis
+
+ There is a new function `notmuch-address-toggle-internal-completion`
+ (by default it has no keybinding) which allows users who normally
+ use an external completion command to use the builtin internal
+ completion for the current buffer.
+
+ Alternatively, if the user has company-mode enabled, then the user
+ can use company mode commands such as `company-complete` to
+ activate the builtin completion for an individual completion.
+
Resend messages
The function `notmuch-show-resend-message` (bound to `b` in show