Log Message:
Updated calibre to 2.78.0.

Use included versions of chardet and html5lib.
chardet: not sure if included copy is modified.
html5lib: included copy is definitely modified.

New Features

    View button: Add an action to the right click menu that always opens the \ 
book with the calibre viewer, regardless of the preferences
    Kobo driver: Update to support the newest firmware from Kobo
    E-book viewer: Allow opening a specific item from the Table of Contents via \ 
the --open-at command line parameter.
    Closes tickets: 1656573
    Amazon metadata download: Add support for downloading from amazon.ca

Bug Fixes

    Edit Book: Do not condense CSS rules when saving AZW3 files regardless of \ 
the value of Preferences->Common Options->Look & Feel->Expand CSS
    EPUB Output: Fix a duplicate id created in rare circumstances when splitting \ 
on page breaks.
    Closes tickets: 1658744

    DOCX Input: Fix error when converting documents that have images pointing to \ 
web resources.
    Closes tickets: 1659142

    E-book viewer: Fix a regression that caused an increase in load times when \ 
loading the individual HTML files inside an EPUB book.
    Closes tickets: 1658578

    Fix setting a similar books search to use the formats field in \ 
Preferences->Searching resulting in an error.
    Closes tickets: 1658386

    Kobo driver: Fix incorrect cover size being uploaded to the Glo HD
    E-book viewer: Fix 'View Image' right click menu action not available for \ 
svg files included via <img> tags.
    Closes tickets: 1657717

    HTML Input: Remove the # character from input filenames, for maximum \ 
compatibility.
    Closes tickets: 1656833

    Edit Book: Fix spell check treating the unicode hyphen (U+2010) differently \ 
from the normal hyphen (U+002d).
    Closes tickets: 1656319

New news sources

    The Sunday Times Magazine by Bobby Steel

Improved news sources

    FOX News
    Oriental Daily
    AM730
    The Times
    NYTimes
    Mediapart
    Echo Online
    kath.net
    GoComics
    The Hindu