Use lbdb for queries.

Little Brother's Database [1] can be used to look up contacts from your
GPG keyring, from received mails (if fed to lbdb through lbdb-fetchaddr),
and more.

[1]: http://www.spinnaker.de/lbdb/
Info on offlineimap + notmuch + lbdb + mutt.

The readme contains info on my mail set up. The install script will now
offer to install a script to use for offlineimap's postsynchook. It will
also run _notmuch config_ if notmuch is installed and no config is
present.
Source ~/.muttrc-local if it exists.

Use ~/.muttrc-local for settings which are not under source control.
Changed the gmail example.

No longer using ~/.mutt/ for anything. The muttrc-local file has an
example for setting up local settings which you maybe do not want
versioned.