old_contents: from ._astropy_init import *
  
  # Enforce Python version check during package import.
  # This is the same check as the one at the top of setup.py
  import sys
  
  __minimum_python_version__ = "3.6"
  
  class UnsupportedPythonError(Exception):
      pass
  
  if sys.version_info < tuple((int(val) for val in __minimum_python_version__.split('.'))):
      raise UnsupportedPythonError("thejoker does not support Python < {}"
                                   .format(__minimum_python_version__))
  
  # For egg_info test builds to pass, put package imports here.
  if not _ASTROPY_SETUP_:
      from .thejoker import TheJoker
      from .data import RVData
      from .samples import JokerSamples
      from .prior import JokerPrior
  
new_contents: from ._astropy_init import *
  
  # Enforce Python version check during package import.
  # This is the same check as the one at the top of setup.py
  import sys
  
  __minimum_python_version__ = "3.6"
  
  class UnsupportedPythonError(Exception):
      pass
  
  if sys.version_info < tuple((int(val) for val in __minimum_python_version__.split('.'))):
      raise UnsupportedPythonError("thejoker does not support Python < {}"
                                   .format(__minimum_python_version__))
  
  # For egg_info test builds to pass, put package imports here.
  if not _ASTROPY_SETUP_:
      from .thejoker import TheJoker
      from .data import RVData
      from .samples import JokerSamples
      from .prior import JokerPrior
  
  __bibtex__ = __citation__ = """@ARTICLE{thejoker,
         author = {{Price-Whelan}, Adrian M. and {Hogg}, David W. and
           {Foreman-Mackey}, Daniel and {Rix}, Hans-Walter},
          title = "{The Joker: A Custom Monte Carlo Sampler for Binary-star and Exoplanet Radial Veloc\
  ity Data}",
        journal = {\apj},
       keywords = {binaries: spectroscopic, methods: data analysis, methods: statistical, planets and \
  satellites: fundamental parameters, surveys, techniques: radial velocities, Astrophysics - Solar and\
   Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics},
           year = "2017",
          month = "Mar",
         volume = {837},
         number = {1},
            eid = {20},
          pages = {20},
            doi = {10.3847/1538-4357/aa5e50},
  archivePrefix = {arXiv},
         eprint = {1610.07602},
   primaryClass = {astro-ph.SR},
         adsurl = {https://ui.adsabs.harvard.edu/abs/2017ApJ...837...20P},
        adsnote = {Provided by the SAO/NASA Astrophysics Data System}
  }
  """
  
subject: add bibtex/citation dunder