old_contents: # Licensed under a 3-clause BSD style license - see LICENSE.rst
  
  """
  This is an Astropy affiliated package.
  """
  
  # Affiliated packages may add whatever they like to this file, but
  # should keep this content at the top.
  # ----------------------------------------------------------------------------
  from ._astropy_init import *
  # ----------------------------------------------------------------------------
  
  from .core import *
  from .onezone import *
  from .plot import *
  from .utils import *
  
new_contents: # Licensed under a 3-clause BSD style license - see LICENSE.rst
  
  """
  `gammafit` uses MCMC fitting of non-thermal X-ray, GeV, and TeV spectra
  to constrain the properties of their parent relativistic particle distributions.
  
  The workhorse of gammafit is the powerful `~emcee`
  affine-invariant ensemble sampler for Markov chain Monte Carlo.
  """
  
  # Affiliated packages may add whatever they like to this file, but
  # should keep this content at the top.
  # ----------------------------------------------------------------------------
  from ._astropy_init import *
  # ----------------------------------------------------------------------------
  
  from .core import *
  from .onezone import *
  from .plot import *
  from .utils import *
  
subject: Add package docstring.