This update for calibre fixes the following issues:

- Update to 2.49.0:
+ A new tool to easily export and import all calibre data --
books, settings and plugins.
+ Get Books: Add plugins for Amazon Australia and Amazon India.
Also restore the Amazon EU plugins (lp#1526089).
+ PDF Input: Fix conversion of PDF documents that contain ASCII
control codes in their outlines not working (lp#1527697).
+ Driver for Energy Ereader Screenlight (lp#1529108).
+ E-book viewer: Add an option to allow only a single book to be
viewed at a time. Trying to view a second book will cause it to
replace the currently viewed book (lp#1526504).
+ Kobo driver: Add support for the new firmware 3.19.5761.
+ Get Books: Update plugins for various Polish language book stores
to handle changes to the website.
+ Amazon metadata download: Handle a change in the amazon website
that prevented review metadata from being downloaded.
+ Download calibre plugins securely using HTTPS.
+ MOBI Output: Try to autofix corrupted PNG images in the input
document (lp#1531738).
+ Nook Glowlight Plus: Send files by default to the NOOK/My Files
folder (lp#1531394).
+ E-book viewer: Fix failure to view comic files that contain
non-ASCII characters int heir internal filenames (lp#1530517).
+ And more, for details see http://calibre-ebook.com/whats-new