* Add djvulibre-lib and libspectre dependencies.
Changelog:
Release 0.4:
* Added support for multiple formats.
* Added format detection using libmagic.
* Added support for PostScript. Thanks to Alexander Volkov.
* Added rudimentary support for DjVu.
* Added support for hyperlinks in DjVu documents. Thanks to Alexander Volkov.
* Added support for outline and properties of DjVu documents.
* Added support for UNIX signals.
* Added missing support for links to external documents.
* Small improvements to prefetching.
* Changed presentation view to support rotation, caching and prefetching.
* Dropped support for storing tabs and bookmarks as XML files.
* Improved handling of headers and their interdependencies. Thanks to Alexander Volkov.
* Updated Ukrainian translation. Thanks to Vladimir Smolyar and yurchor.
* Updated Croatian translation. Thanks to freedomrun.
* Updated Slovak translation. Thanks to DAG Software.
* Updated Czech translation. Thanks to Pavel Fric.
* Updated British English translation. Thanks to Andi Chandler.
* Updated French translation. Thanks to Hélion du Mas des Bourboux.
* Updated Polish translation. Thanks to Mateusz Łukasik and Mike08.
* Updated Brazilian Portguese translation. Thanks to Phillipe Smith.
* Updated Hebrew translation. Thanks to Yaron Shahrabani.
* Updated Catalan translation. Thanks to VPablo.
* Updated Asturian translation. Thanks to Xuacu Saturio.
* Updated French translation. Thanks to Sylvie Gallet and Tanguy Herrmann.
* Updated Italian translation. Thanks to Claudio Arseni.
* Updated Spanish translation. Thanks to Dante Diaz.
* Updated Russian translation. Thanks to Vladimir Smolyar.
* Updated Bosnian translation. Thanks to Kenan Dervišević.
* Added Malay translation. Thanks to abuyop.
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