Log Message:
calibre: update to 3.29.0.

- version: 3.29.0
  date: 2018-09-10

  new features:
    - title: "Add a option to draw a grid in the main book list \ 
(Preferences->Look & feel)"

    - title: "Edit book: Allow removing the currently highlighted tag \ 
(while keeping its contents) by pressing Ctrl+>. You can also add a tool to \ 
do it via Preferences->Toolbars"

    - title: "Content server: When defining a color scheme for the in \ 
browser viewer allow specifying the link color as well as the foreground and \ 
background."

    - title: "Edit book: Show a popup after a fix all html/beautify all \ 
files so the user can easily see what was changed, if needed."

    - title: "Kindle driver: Create cover thumbnails on the device when \ 
transferring KFX format books"

    - title: "Edit Book: Recognize numbers in image names in the 'Insert \ 
image' dialog"

- version: 3.28.0
  date: 2018-07-20

  new features:
    - title: "Allow creating rules to transform author names when adding \ 
books to calibre. Accessible via Preferences->Adding books->Adding \ 
actions"

    - title: "Add a similar author mapper tool to manipulate author names \ 
in the existing library. Accessible via Preferences->Toolbars"

    - title: "Add a similar author mapper tool for metadata downloading, \ 
accessible via Preferences->Metadata download"

    - title: "Comments Editor: Add options to change the case of the \ 
selected text to the right click menu"

    - title: "Edit book: When sorting non text files in the File list \ 
recognize numbers in the file names"

- version: 3.27.1
  date: 2018-07-06

  new features:
    - title: "Content server: Allow conversion of books"
      type: major
      description: "Click the convert icon in the top bar of the book \ 
details page to convert a book. Note that conversion only works for logged in \ 
users who have permission to make changes to the calibre library."

    - title: "Kobo driver: Add support for new firmware"

    - title: 'Bulk metadata edit dialog: Add an "edit tags" button for \ 
tags like custom columns.'

    - title: "Add an option in Preferences->Look & feel to disable \ 
the new 'drag and drop to merge books feature'"

    - title: "E-book viewer: Add a shortcut (Ctrl+Alt+B) to toggle the \ 
bookmarks panel."

    - title: "Edit book: Add a copy to clipboard button on the various \ 
report dialogs"

    - title: "Edit book: Add a shortcut (Ctrl+Alt+Down) to edit the next \ 
file in the book spine."

    - title: "calibre-smtp: Verify relay server TLS certificates by \ 
default. New option --dont-verify-server-certificate to restore old \ 
behavior."