opusfile: update from 0.4 to 0.6

pkgs/applications/audio/opusfile/default.nix

···
 {stdenv, fetchurl, pkgconfig, openssl, libogg, libopus}:
 
 stdenv.mkDerivation rec {
-  name = "opusfile-0.4";
+  name = "opusfile-0.6";
   src = fetchurl {
     url = "http://downloads.xiph.org/releases/opus/${name}.tar.gz";
-    sha256 = "0h4iwyqgid0cibqwzckz3r94qfp09099nk1cx5nz6i3cf08yldlq";
+    sha256 = "19iys2kld75k0210b807i4illrdmj3cmmnrgxlc9y4vf6mxp2a14";
   };
 
   buildInputs = [ pkgconfig openssl libogg libopus ];
···
   meta = {
     description = "High-level API for decoding and seeking in .opus files";
     homepage = http://www.opus-codec.org/;
-    license = "BSD";
+    license = stdenv.lib.licenses.bsd3;
+    maintainers = with stdenv.lib.maintainers; [ fuuzetsu ];
   };
 }