old_contents: """
  requests Kerberos/GSSAPI authentication library
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  Requests is an HTTP library, written in Python, for human beings. This library
  adds optional Kerberos/GSSAPI authentication support and supports mutual
  authentication. Basic GET usage:
  
      >>> import requests
      >>> from requests_kerberos import HTTPKerberosAuth
      >>> r = requests.get("http://example.org", auth=HTTPKerberosAuth())
  
  The entire `requests.api` should be supported.
  """
  import logging
  
  from .kerberos_ import HTTPKerberosAuth, REQUIRED, OPTIONAL, DISABLED
  from .exceptions import MutualAuthenticationError
  from .compat import NullHandler
  
  logging.getLogger(__name__).addHandler(NullHandler())
  
  __all__ = ('HTTPKerberosAuth', 'MutualAuthenticationError', 'REQUIRED',
             'OPTIONAL', 'DISABLED')
  __version__ = '0.12.0'
  
new_contents: """
  requests Kerberos/GSSAPI authentication library
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  
  Requests is an HTTP library, written in Python, for human beings. This library
  adds optional Kerberos/GSSAPI authentication support and supports mutual
  authentication. Basic GET usage:
  
      >>> import requests
      >>> from requests_kerberos import HTTPKerberosAuth
      >>> r = requests.get("http://example.org", auth=HTTPKerberosAuth())
  
  The entire `requests.api` should be supported.
  """
  import logging
  
  from .kerberos_ import HTTPKerberosAuth, REQUIRED, OPTIONAL, DISABLED
  from .exceptions import MutualAuthenticationError
  from .compat import NullHandler
  
  logging.getLogger(__name__).addHandler(NullHandler())
  
  __all__ = ('HTTPKerberosAuth', 'MutualAuthenticationError', 'REQUIRED',
             'OPTIONAL', 'DISABLED')
  __version__ = '0.13.0.dev0'
  
subject: bump dev version to 0.13.0.dev0