old_contents: import core
  import data
  
  from .data import get
  #from .core import year_frac, PerformanceStats, GroupStats, merge
  from .core import *
  
  core.extend_pandas()
  
  __version__ = (0, 1, 3)
  
new_contents: import core
  import data
  
  from .data import get
  #from .core import year_frac, PerformanceStats, GroupStats, merge
  from .core import *
  
  core.extend_pandas()
  
  __version__ = (0, 1, 4)
  
subject: bump to 0.1.4