Set version to 0.13.0.

Author: hsorby

setup.py

@@ -35,7 +35,7 @@ def readfile(filename, split=False):
 
 setup(
     name="scaffoldmaker",
-    version="0.12.0",
+    version="0.13.0",
     description="Python client for generating anatomical scaffolds using Zinc",
     long_description="\n".join(readme) + source_license,
     long_description_content_type="text/x-rst",