Add packages for a number of fonts.

The added fonts are

 - Caladea,
 - Carlito,
 - Comfortaa,
 - Comic Relief,
 - Crimson,
 - Fantasque Sans Mono,
 - Lobster Two,
 - Pecita,
 - Quattrocento, and
 - Quattrocento Sans.

pkgs/data/fonts/quattrocento/default.nix

@@ -0,0 +1,29 @@
+{stdenv, fetchurl, unzip}:
+
+stdenv.mkDerivation rec {
+  name = "quattrocento-${version}";
+  version = "1.1";
+
+  src = fetchurl {
+    url = "http://www.impallari.com/media/releases/quattrocento-v${version}.zip";
+    sha256 = "09wmbfwkry1r2cf5z4yy67wd4yzlnsjigg01r5r80z1phl0axn9n";
+  };
+
+  buildInputs = [unzip];
+  phases = ["unpackPhase" "installPhase"];
+
+  installPhase = ''
+    mkdir -p $out/share/fonts/opentype
+    mkdir -p $out/share/doc/${name}
+    cp -v "src/"*.otf $out/share/fonts/opentype
+    cp -v FONTLOG.txt $out/share/doc/${name}
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = http://www.impallari.com/quattrocento/;
+    description = "A classic, elegant, sober and strong serif typeface";
+    license = licenses.ofl;
+    platforms = platforms.all;
+    maintainers = [maintainers.rycee];
+  };
+}