mapsplotlib: disable for python3

Changed files
+2
pkgs
+2
pkgs/top-level/python-packages.nix
···
name = "mapsplotlib-${version}";
version = "1.0.6";
+
disabled = isPy3k;
+
src = pkgs.fetchurl {
url = "mirror://pypi/m/mapsplotlib/${name}.tar.gz";
sha256 = "09gpws3x0jd88n636baxx5izjffrpjy4j6jl8l7vj29yzvrdr2bp";