message: language_level was not properly set
diff: @@ -39,8 +39,7 @@ for module in modules:
  libraries=libraries,
  library_dirs=library_dirs,
  include_dirs=include_dirs,
  - runtime_library_dirs=runtime_library_dirs,
  - cython_directives = {'language_level': str(sys.version_info[0])},))
  + runtime_library_dirs=runtime_library_dirs,))
  setup(
  name = 'gudhi',
  @@ -49,7 +48,8 @@ setup(
  author_email='gudhi-contact@lists.gforge.inria.fr',
  version='@GUDHI_VERSION@',
  url='http://gudhi.gforge.inria.fr/',
  - ext_modules = cythonize(ext_modules),
  + ext_modules = cythonize(ext_modules,
  + language_level=str(sys.version_info[0])),
  install_requires = ['cython','numpy >= 1.9',],
  setup_requires = ['numpy >= 1.9',],
  )
  