users/19113: reorganised cryptsetup completion function
33198: new augeas completion
33218: complete m4a files for mplayer
unposted: add dvipdf to _dvi command list
33221 (including 33173 from Anthony Heading): _perforce tweak.
Complete directories when handling unmaintained files for add.
Rationalise code and comments around this.
unposted: mention /usr/local/share/zsh/site-functions default in NEWS
unposted: mention numeric output with underscore separators
unposted: more NEWS tweaks while I'm there.
33179: _git: updates for Git 2.0.0

This incorporates changes mentioned in the release notes since 1.9.0.
33176: _git: Add missing --list to git-tag
33178: _git: updates for Git 2.1.0

This incorporates changes mentioned in the release notes since 2.0.0.
33177: _git: fix typo in git-apply
33180: _git: add missing --3way option
33223: discard stderr except when _complete_debug is in progress.
33224: complete directory as second btrfs argument
33238: correct return values
unposted: tweak last change to NEWS a bit
users/19143: fix depth glob search with trailing slashes
33212: improve log entry
33252: complete more notmuch subcommands