Questions related to the way that probabilistic prefixes and phrases
are handled come up quite often and it is nicer to have the documentation self contained. Hopefully putting it in subsections prevents it from being overwhelming.
Adds new entry to the NEWS file, and updates the search terms section
of the man page. The search terms section needs to be updated again
once the new section in the documentation covering probablistic terms
has been committed.
This is the output from sphinx-quickstart, massaged a bit, along with
our existing man pages converted to rst.
A skeleton notmuch-emacs manual is also included. It is not suitable
for end user use yet.
