pdf2djvu: update from 0.8 to 0.8.1

pkgs/tools/typesetting/pdf2djvu/default.nix

···
 { stdenv, fetchurl, pkgconfig, djvulibre, poppler, fontconfig, libjpeg }:
 
 stdenv.mkDerivation rec {
-  version = "0.8";
+  version = "0.8.1";
   name = "pdf2djvu-${version}";
 
   src = fetchurl {
     url = "https://bitbucket.org/jwilk/pdf2djvu/downloads/${name}.tar.xz";
-    sha256 = "0xdxx5c7hvhzfmi37cf9p17smm2y55wc8z1vsncqqvf1sxqpjmbn";
+    sha256 = "1sgqz7y4zn6xg0wicmyy83hbwbhv076vd81kigpcz3rjqk11lsvi";
   };
 
   buildInputs = [ pkgconfig djvulibre poppler fontconfig libjpeg ];