old_contents: __all__ = ['algorithms', 'dialogs', 'exporter', 'legend', 'mainui', 'puplot', 'tsplot', 'utils']
  
new_contents: __all__ = ['algorithms', 'dialogs', 'exporter', 'legend', 'mainui', 'puplot', 'tsplot', 'utils', 'ui']
  
subject: Add ui module to path