Log Message:
Updated notmuch to 0.25.

Notmuch 0.25 (2017-07-25)
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General
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Add regexp searching for mid, paths, and tags.

Skip HTML tags when indexing

  In particular this avoids indexing large inline images.

Command Line Interface
----------------------

Bash completion is now installed to /usr/share by default.

Allow space as separator for keyword arguments.

Emacs
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Support for stashing message timestamp in show and tree views

  Invoking `notmuch-show-stash-date` with a prefix argument
  stashes the unix timestamp of the current message instead of
  the date string.

Don't use 'function' as variable name, workaround emacs bug 26406.

Library Changes
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Add workaround for date parsing of bad input in older GMime

  In certain circumstances, older GMime libraries could return
  negative numbers when parsing syntactically invalid dates.

Replace deprecated functions with status returning versions

  API of notmuch_query_{search,count}_{messages,threads} has
  changed.  notmuch_query_add_tag_exclude now returns a status
  value.

Add support for building against GMime 3.0.

Rename libutil.a to libnotmuch_util.a.

libnotmuch SONAME is incremented to libnotmuch.so.5.