[tomboy] Created tag 1.15.9

[Alex Tereschenko <alexter src gnome org>]

The unsigned tag '1.15.9' was created.

Tagger: Alex Tereschenko <frozen and blue gmail com>
Date: Sun Jul 16 13:55:31 2017 +0200

    tagging 1.15.9

Changes since the last tag '1.15.8':

Alex Tereschenko (6):
      Bump the version up to 1.15.9
      NoteWindow.cs: fix note search to work with multibyte characters
      Watchers.cs: fix URL highlighting with multibytes in the text
      .gitignore: add MSI files
      RecentChanges.cs: disconnect "note deleted" handler on window close
      NEWS: update for 1.15.9 release

Damien Doumer Tohin (1):
      README: convert to Markdown, refresh contents