new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  # emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: nil -*-
  # vi: set ft=python sts=4 ts=4 sw=4 et:
  """
  Fieldmap-processing workflows.
  
  Originally coded by Craig Moodie. Refactored by the CRN Developers.
  """
  import os
  import os.path as op
  
subject: add fieldmaps module