old_contents: """AMQP Specifications and Classes"""
  __author__ = 'Gavin M. Roy'
  __email__ = 'gavinmroy@gmail.com'
  __since__ = '2011-09-23'
  __version__ = '1.5.1'
  
  import sys
  
  # Keep a constant that indicates if Python 3 support is needed
  PYTHON3 = True if sys.version_info > (3, 0, 0) else False
  
  from pamqp.header import ProtocolHeader
  from pamqp.header import ContentHeader
  
new_contents: """AMQP Specifications and Classes"""
  __author__ = 'Gavin M. Roy'
  __email__ = 'gavinmroy@gmail.com'
  __since__ = '2011-09-23'
  __version__ = '1.6.0'
  
  import sys
  
  # Keep a constant that indicates if Python 3 support is needed
  PYTHON3 = True if sys.version_info > (3, 0, 0) else False
  
  from pamqp.header import ProtocolHeader
  from pamqp.header import ContentHeader
  
subject: Bump the version to a major change