old_contents: 
  import sys
  
  __version__ = '2.5.0.0'
  __version_info__ = (2, 5, 0, 0)
  
  # check python version
  if sys.version_info[0] < 3 or sys.version_info[1] < 6:
      raise ValueError("Pylinac is only supported on Python 3.6+. Please update your environment.")
  
  # import shortcuts
  from pylinac.ct import CatPhan504, CatPhan600, CatPhan503, CatPhan604
  from pylinac.core import decorators, geometry, image, io, mask, profile, roi, utilities
  from pylinac.core.utilities import clear_data_files, assign2machine
  from pylinac.field_analysis import FieldAnalysis, DeviceFieldAnalysis, Protocol, Device, Edge, \
      Interpolation, Normalization, Centering
  from pylinac.planar_imaging import LeedsTOR, StandardImagingQC3, LasVegas, DoselabMC2kV, DoselabMC2MV
  from pylinac.log_analyzer import load_log, Dynalog, TrajectoryLog, MachineLogs
  from pylinac.picketfence import PicketFence  # must be after log analyzer
  from pylinac.starshot import Starshot
  from pylinac.vmat import DRMLC, DRGS
  from pylinac.winston_lutz import WinstonLutz
  from pylinac.calibration import tg51, trs398
  
  
new_contents: 
  import sys
  
  __version__ = '3.0a'
  __version_info__ = (3, 0, 0, 0)
  
  # check python version
  if sys.version_info[0] < 3 or sys.version_info[1] < 6:
      raise ValueError("Pylinac is only supported on Python 3.6+. Please update your environment.")
  
  # import shortcuts
  from pylinac.ct import CatPhan504, CatPhan600, CatPhan503, CatPhan604
  from pylinac.core import decorators, geometry, image, io, mask, profile, roi, utilities
  from pylinac.core.utilities import clear_data_files, assign2machine
  from pylinac.field_analysis import FieldAnalysis, DeviceFieldAnalysis, Protocol, Device, Edge, \
      Interpolation, Normalization, Centering
  from pylinac.planar_imaging import LeedsTOR, StandardImagingQC3, LasVegas, DoselabMC2kV, DoselabMC2MV
  from pylinac.log_analyzer import load_log, Dynalog, TrajectoryLog, MachineLogs
  from pylinac.picketfence import PicketFence  # must be after log analyzer
  from pylinac.starshot import Starshot
  from pylinac.vmat import DRMLC, DRGS
  from pylinac.winston_lutz import WinstonLutz
  from pylinac.calibration import tg51, trs398
  
  
subject: bump version for testing