old_contents: """Vumi Go HTTP API client library."""
  
  from .send import HttpApiSender, LoggingSender
  
  __version__ = "0.3.1a0"
  
  __all__ = [
      'HttpApiSender', 'LoggingSender',
  ]
  
new_contents: """Vumi Go HTTP API client library."""
  
  from .send import HttpApiSender, LoggingSender
  from .account import AccountApiClient
  
  __version__ = "0.3.1a0"
  
  __all__ = [
      'HttpApiSender', 'LoggingSender',
      'AccountApiClient',
  ]
  
subject: Add AccountApiClient to top-level package.