Log Message:
Update to 0.16:

Command-Line Interface
Support for delivering messages to Maildir

There is a new command insert that adds a message to a Maildir folder and \ 
notmuch index.
notmuch count --batch option

notmuch count now supports batch operations similar to notmuch tag. This is \ 
mostly an optimization for remote notmuch usage.
notmuch tag option to remove all tags from matching messages

notmuch tag --remove-all option has been added to remove all tags from matching \ 
messages. This can be combined with adding new tags, resulting in setting \ 
(rather than modifying) the tags of the messages.
Decrypting commands explicitly expect a gpg-agent

Decryption in notmuch show and notmuch reply has only ever worked with a \ 
functioning gpg-agent. This is now made explicit in code and documentation. The \ 
functional change is that it's now possible to have gpg-agent running, but gpg \ 
"use-agent" configuration option disabled, not forcing the user to use \ 
the agent everywhere.
Configuration file saves follow symbolic links

The notmuch commands that save the configuration file now follow symbolic links \ 
instead of overwrite them.
Top level option to specify configuration file

It's now possible to specify the configuration file to use on the command line \ 
using the notmuch --config=FILE option.
Bash command-line completion

The notmuch command-line completion support for the bash shell has been \ 
rewritten. Supported completions include all the notmuch commands, command-line \ 
arguments, values for keyword arguments, search prefixes (such as \ 
"subject:" or "from:") in all commands that use search \ 
terms, tags after + and - in notmuch tag, tags after "tag:" prefix, \ 
user's email addresses after "from:" and "to:" prefixes, and \ 
config options (and some config option values) in notmuch config. The new \ 
completion support depends on the bash-completion package.

Deprecated commands "part" and "search-tags" are removed.
Emacs Interface
New keymap to view/save parts; removed s/v/o/| part button bindings

The commands to view, save, and open MIME parts are now prefixed with \ 
"." (". s" to save, ". v" to view, etc) and can be \ 
invoked with point anywhere in a part, unlike the old commands, which were \ 
restricted to part buttons. The old \ 
"s"/"v"/"o"/"|" commands on part buttons \ 
have been removed since they clashed with other bindings (notably "s" \ 
for search!) and could not be invoked when there was no part button. The new, \ 
prefixed bindings appear in show's help, so you no longer 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.
Key bindings for next/previous thread

Show view has new key bindings M-n and M-p to move to the next and previous \ 
thread in the search results.
Better handling of errors in search buffers

Instead of interleaving errors in search result buffers, search mode now reports \ 
errors in the minibuffer.
Faster search and show

Communication between Emacs and the notmuch CLI is now more efficient because it \ 
uses the CLI's S-expression support. As a result, search mode should now fill \ 
search buffers faster and threads should show faster.

No Emacs 22 support

The Emacs 22 support added late 2010 was sufficient only for a short period of \ 
time. After being incomplete for roughly 2 years the code in question was now \ 
removed from this release.

Vim Front-End

The vim based front-end has been replaced with a new one that uses the Ruby \ 
bindings. The old font-end is available in the contrib subfolder.

Python Bindings

Fix loading of libnotmuch shared library on OS X (Darwin) systems.