Log Message:
calibre: update to 3.19.0.

- version: 3.19.0
  date: 2018-03-09

  new features:
    - title: "Driver for the new PocketBook 740"

    - title: "Allow using relative URLs in comments type metadata. The \ 
relative URLs are interpreted relative to the book folder in the calibre \ 
library"

    - title: "Edit book: Reports: Do not show characters from the HTML \ 
markup in the characters report."
      tickets: [1753788]

    - title: "Allow adding the Virtual library button to any toolbar/menu \ 
via Preferences->Toolbars & menus"

  bug fixes:
    - title: "Server: Fix server becoming unresponsive if a client sends \ 
invalid SSL data at exactly the right moment"

    - title: "Conversion heuristics: Make unwrapping recognize Georgian \ 
letters as well."
      tickets: [1753533]

    - title: "Make de-serialization of stored conversion options safe \ 
against maliciously crafted input"
      tickets: [1753870]

    - title: "E-book viewer: Change the file format used to import/export \ 
bookmarks to use JSON. This prevents malicious bookmarks files from causing code \ 
execution."
      tickets: [1753870]

    - title: "Make the history completion for the search and replace edit \ 
box case-sensitive."
      tickets: [1752447]

    - title: "PDF Output: When the input document contains multiple anchors \ 
with the same value, use the first anchor rather than the last. This follows \ 
browser behavior."
      tickets: [1752825]

    - title: "FB2 Input: Add <div> to <blockquote> content to \ 
silence the useless epubcheck"
      tickets: [1752141]

  improved recipes:
    - WirtschaftsWoche Online
    - Spektrum der Wissenschaft

  new recipes:
    - title: Granta
      author: Gary Arnold

- version: 3.18.0
  date: 2018-02-23

  new features:
    - title: "Browser viewer: Allow long tapping a word to look it up in a \ 
dictionary or search the internet for it."
      tickets: [1738995]

  bug fixes:
    - title: "Conversion: Handle the deprecated type attribute on \ 
<ol> tags."
      tickets: [1751148]

    - title: "Fix metadata download from amazon stopped working because of \ 
a website change"

    - title: "Fix re-ordering of columns causing split book splitter state \ 
not being restored on restart"

    - title: "Fix errors when using strftime with unicode strings on \ 
non-utf-8 windows systems."
      tickets: [1749219]

    - title: "Split book view: Fix vertical scroll position of the two \ 
views getting out of sync after doing some searches."
      tickets: [1748739]

    - title: "Fix some edit widget appearing in the wrong place when \ 
editing in the right hand panel of the new split book list."
      tickets: [1748713]

    - title: "Portable build: Fix cache directory not always being \ 
auto-created"
      tickets: [1747887]

    - title: "Workaround for Qt 5.10 on Linux resetting the global font, \ 
preventing custom interface font settings from working"

  improved recipes:
    - New York Times
    - The Economist
    - Gosc
    - Various Uruguayan recipes

- version: 3.17.0
  date: 2018-02-09

  new features:
    - title: "Allow splitting the book list, by right clicking on the \ 
column headers and choosing 'Split the book list'"
      type: major
      description: "This is useful to 'lock' one or more columns in place \ 
so that they are always visible even when scrolling through other columns. Also, \ 
the split list has a separate right click menu which you can configure via \ 
Preferences->Toolbars and menus"

    - title: "Store temporary files used by the editor and viewer in the \ 
cache directory to try to prevent errors caused by 'file cleaner' programs \ 
deleting temporary files still in use"

  bug fixes:
    - title: "EPUB3 Input: Fix HTML covers and titlepages that are marked \ 
using the deprecated <guide> element not being recognized."
      tickets: [1746794]

    - title: "Bulk metadata edit: Fix regression in 3.13 that made it \ 
impossible to use the Force numbering checkbox for custom series"

    - title: "Conversion: Fix the valign attribute on <td> tags not \ 
being honored"

    - title: "E-book viewer: Fix the 'Copy' keyboard shortcut/context menu \ 
action not working on some Windows systems"
      tickets: [1477696]

    - title: "E-book viewer: Make the semi-transparent background for \ 
viewing metadata a little more opaque."
      tickets: [1745812]

  improved recipes:
    - New York Times
    - Le Devoir
    - New Statesman
    - London Review of Books
    - New York Post
    - LWN Weekly
    - Associated Press

  new recipes:
    - title: Computing
      author: Darko Miletic