Added versioneer cmdclass

setup.py

@@ -74,6 +74,12 @@ def cython_extensions(*extensions):
     else:
         return None
 
+def get_cmdclass():
+    cmdclass={"quicktest": SimpleTestRunner}
+    cmdclass.update(versioneer.get_cmdclass())
+    return cmdclass
+
+
 setuptools.setup(name='pystencils',
                  description='Speeding up stencil computations on CPUs and GPUs',
                  version=versioneer.get_version(),
@@ -129,7 +135,5 @@ setuptools.setup(name='pystencils',
                                 'randomgen>=1.18'],
 
                  python_requires=">=3.6",
-                 cmdclass={
-                     'quicktest': SimpleTestRunner
-                 },
+                 cmdclass=get_cmdclass()
                  )