old_contents: from . import core
  from . import data
  
  from .data import get
  #from .core import year_frac, PerformanceStats, GroupStats, merge
  from .core import *
  
  core.extend_pandas()
  
  __version__ = (0, 1, 12)
  
new_contents: from . import core
  from . import data
  
  from .data import get
  #from .core import year_frac, PerformanceStats, GroupStats, merge
  from .core import *
  
  core.extend_pandas()
  
  __version__ = (0, 1, 13)
  
subject: bump to 0.1.13