add explicit dep on libicu48

debian/changelog

+liber (0.1p2) unstable; urgency=medium
+
+  * Fixes to 'update'.
+
+ -- ale <ale@incal.net>  Thu, 20 Nov 2014 09:02:21 +0000
+
 liber (0.1) unstable; urgency=low
 
   * Initial Release.

debian/control

@@ -8,7 +8,7 @@ Homepage: https://git.autistici.org/ale/liber
 
 Package: liber
 Architecture: any
-Depends: libleveldb1 (>=1.15), ${shlibs:Depends}, ${misc:Depends}
+Depends: libleveldb1 (>=1.15), libicu48, ${shlibs:Depends}, ${misc:Depends}
 Description: Ebook collection indexer.
  Index and search an ebook collection.