old_contents: from setuptools import setup
  
  
  setup(name='slacker',
        version='0.3.9',
        packages=['slacker'],
        description='Slack API client',
        author='Oktay Sancak',
        author_email='oktaysancak@gmail.com',
        url='http://github.com/os/slacker/',
        install_requires=['requests >= 2.2.1'],
        license='http://www.apache.org/licenses/LICENSE-2.0',
        keywords='slack api')
  
new_contents: from setuptools import setup
  
  
  setup(name='slacker',
        version='0.4.0',
        packages=['slacker'],
        description='Slack API client',
        author='Oktay Sancak',
        author_email='oktaysancak@gmail.com',
        url='http://github.com/os/slacker/',
        install_requires=['requests >= 2.2.1'],
        license='http://www.apache.org/licenses/LICENSE-2.0',
        keywords='slack api')
  
subject: Set version number to 0.4.0.