old_contents: 
  from ..isochrone import FastIsochrone
  from .grid import MISTModelGrid
  
  class MIST_Isochrone(FastIsochrone):
      """MESA Isochrones and Stellar Tracks
  
      :param bands: (optional)
          List of desired photometric bands.  Default list of bands is
          ``['G','B','V','J','H','K','W1','W2','W3','g','r','i','z','Kepler']``.
          Here ``B`` and ``V`` are Tycho-2 mags, `griz` are SDSS, and ``G`` is
          Gaia G-band.
  
      Details of models are `here <http://waps.cfa.harvard.edu/MIST/>`_.
  
      """
      name = 'mist'
      eep_col = 'EEP'
      age_col = 'log10_isochrone_age_yr'
      feh_col = '[Fe/H]'
      mass_col = 'star_mass'
      initial_mass_col = 'initial_mass'
      logTeff_col = 'log_Teff'
      logg_col = 'log_g'
      logL_col = 'log_L'
      modelgrid = MISTModelGrid
      default_bands = ('G','B','V','J','H','K','W1','W2','W3','g','r','i','z','Kepler')
  
      def __init__(self, *args, **kwargs):
          self.version = kwargs.get('version', MISTModelGrid.default_kwargs['version'])
          if self.version == '1.1':
              self.default_bands = self.default_bands + ('TESS', 'BP', 'RP')
  
          super().__init__(*args, **kwargs)
  
      @property
      def fehs(self):
          if self._fehs is None:
              self._fehs = self.df.loc[:, '[Fe/H]_init'].unique().astype(float)
          return self._fehs
  
      def Z_surf(self, mass, age, feh):
          return self.interp_value(mass, age, feh, '[Fe/H]')
  
new_contents: 
  from ..isochrone import FastIsochrone
  from .grid import MISTModelGrid
  
  class MIST_Isochrone(FastIsochrone):
      """MESA Isochrones and Stellar Tracks
  
      :param bands: (optional)
          List of desired photometric bands.  Default list of bands is
          ``['G','B','V','J','H','K','W1','W2','W3','g','r','i','z','Kepler']``.
          Here ``B`` and ``V`` are Tycho-2 mags, `griz` are SDSS, and ``G`` is
          Gaia G-band.
  
      Details of models are `here <http://waps.cfa.harvard.edu/MIST/>`_.
  
      """
      name = 'mist'
      eep_col = 'EEP'
      age_col = 'log10_isochrone_age_yr'
      feh_col = '[Fe/H]'
      mass_col = 'star_mass'
      initial_mass_col = 'initial_mass'
      logTeff_col = 'log_Teff'
      logg_col = 'log_g'
      logL_col = 'log_L'
      modelgrid = MISTModelGrid
      default_bands = ('G','B','V','J','H','K','W1','W2','W3','g','r','i','z','Kepler')
  
      def __init__(self, *args, **kwargs):
          self.version = kwargs.get('version', MISTModelGrid.default_kwargs['version'])
          if self.version in ('1.1', '1.2'):
              self.default_bands = self.default_bands + ('TESS', 'BP', 'RP')
  
          super().__init__(*args, **kwargs)
  
      @property
      def fehs(self):
          if self._fehs is None:
              self._fehs = self.df.loc[:, '[Fe/H]_init'].unique().astype(float)
          return self._fehs
  
      def Z_surf(self, mass, age, feh):
          return self.interp_value(mass, age, feh, '[Fe/H]')
  
subject: correct default bands for 1.2