old_contents: """
      tests
      ~~~~~
  
      Unit tests for the project.
  
      :copyright: © 2015 by Petr Zemek <s3rvac@gmail.com> and contributors
      :license: MIT, see the ``LICENSE`` file for more details
  """
  
new_contents: """
      tests
      ~~~~~
  
      Tests for the library and tools.
  
      :copyright: © 2015 by Petr Zemek <s3rvac@gmail.com> and contributors
      :license: MIT, see the ``LICENSE`` file for more details
  """
  
subject: Make the description of the tests package more precise.