Log Message:
Updated calibre to 2.81.0.

- version: 2.81.0

  date: 2017-03-10

  new features:
    - title: "Amazon metadata download: Allow downloading amazon metadata \ 
from multiple sources. You can now configure the Amazon plugin via \ 
Preferences->Metadata download to use either the amazon servers, or various \ 
search engine caches to get the metadata. Should help with the recent CAPTCHA \ 
problems when downloading metadata from amazon"

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

    - title: "Edit Book: Spell Check dialog: Always add the original word \ 
as one of the spelling corrections, so that small edits to the word can be made \ 
easily."

    - title: "Edit Book: Saved searched Dialog: Allow re-arranging the \ 
saved searches using drag and drop."

    - title: "Implement auto update of builtin metadata download plugins, \ 
just as for recipes and Get Books plugins. Needed as the websites they get data \ 
from often change."

    - title: "Edit Book: When inserting full screen images, use the actual \ 
image dimensions in the generated SVG code, when available"

    - title: "Linux installer: Check that the umask is suitable before \ 
running the installer. Should fix breakage on systems where users have changed \ 
the user umask but neglected to also alter it for sudo"

    - title: "Bulk metadata edit: Remove the control to delete specific \ 
formats as it is redundant. This functionality is already present by right \ 
clicking the Remove books button"

  bug fixes:
    - title: "TXT Input: When detecting the encoding of txt files only use \ 
the first four kilobytes of text. Fixes excessively slow conversion of very \ 
large text files."

    - title: "Get Books: Fix price not being displayed for books from \ 
Amazon dues to website changes"

    - title: "GetBooks: Update Google Books plugin for website changes"

    - title: "E-book viewer: Fix slow startup when recently opened files \ 
are on a slow/malfunctioning networked filesystem."

    - title: "Google metadata download: Fix metadata not being found when \ 
the title of the book includes a sub-title"

    - title: "Improve downloading of covers from the google books metadata \ 
source"

    - title: "News download: Fix a bug that could cause a crash when \ 
downloading an SVG image."
    - title: "Edit book: Fix a regression that caused pasting copied text \ 
from programs that generate both HTML and plain text when copying to paste the \ 
HTML in preference to the plain text"

  improved recipes:
    - tyzden
    - The Economist
    - Kansas City Star
    - NYTimes
    - The Spectator