old_contents: # Zinc Python package initialisation file.
  __version__ = "@Zinc_VERSION@"
  __revision__ = "@ZINC_REVISION@"
  
new_contents: # Zinc Python package initialisation file.
  __version__ = "@Zinc_VERSION@@ZINC_DEVELOPER_VERSION@"
  __revision__ = "@ZINC_REVISION@"
  
subject: Add developer version information into zinc __init__.py initialisation file.