Log Message:
Update to 2.18.0:

- version: 2.18.0
  date: 2015-01-30

  new features:
    - title: "Edit Book: Add 'Style Classes' and 'Links' report
    pages to the Reports tool"

    - title: "Tag browser: Allow expanding all children of a node
    by right clicking and choosing 'Expand All'"

    - title: "Preferences: Re-arrange the controls to avoid needing
    to move the mouse from the top to the bottom of the dialog when
    closing the dialog after making some changes"

  bug fixes:
    - title: "Save to Disk: Fix a bug where when multiple books
    are being saved to disk, if the save to disk template results
    in identical filenames, the filenames were not being properly
    disambiguated."

    - title: "Preferences: Use a dialog instead of a main window
    to workaround Qt's poor handling of full screen mode on OS X
    Yosemite."

  improved recipes:
    - Al Jazeera in English

- version: 2.17.0
  date: 2015-01-23

  new features:
    - title: "Edit Book: A new reports tool that shows a summary
    of files, images, words, characters and styles used in the
    book."
      description: "The reports tool is a great way to get an
      overview of the different parts of your book. Every line in
      the report is hot-linked, double clicking it jumps to the
      places in the book where that item is used."
      type: major

    - title: "Edit Book: Allow adding the 'Manage Snippets' action
    to the toolbar, for easy access"

  bug fixes:
    - title: "Update Ozon.ru metadata download plugin for website
    changes."

    - title: "E-book viewer: Fix regression in 'flow' mode that
    caused horizontal scrollbar to be rendered as vertical."

    - title: "Fix a regression that prevented adding of books from
    sub-folders if the folder contained only an OPF file and no
    actual ebook files."

  improved recipes:
    - Salon.com
    - The Onion
    - Haaretz
    - Jot Down
    - Le Monde Diplomatique
    - tyzden
    - The AJC

  new recipes:
    - title: TheAtlantic.com 
      author: ebrandon

    - title: The Conversation 
      author: Krittika Goyal

    - title: Apple Daily (TW) 
      author: Yulun Shih