message: Parallel windows build
diff: @@ -174,7 +174,9 @@ class cmake_build(setuptools.Command):
  subprocess.check_call(cmake_args)
  build_args = [CMAKE, '--build', os.curdir]
  - if self.jobs is not None and not WINDOWS:
  + if WINDOWS:
  + build_args.extend(['--', '/maxcpucount:{}'.format(self.jobs)])
  + else:
  build_args.extend(['--', '-j', str(self.jobs)])
  subprocess.check_call(build_args)
  