old_contents: __version__ = "0.8.0a"
  
  try:
      from .utils import gauge, metric  # NOQA
  except ImportError:  # pragma: no cover
      pass  # pragma: no cover
  
new_contents: __version__ = "0.8.0a"
  
  try:
      from .utils import gauge, metric, set_metric  # NOQA
  except ImportError:  # pragma: no cover
      pass  # pragma: no cover
  
subject: include set_metric in __init__