old_contents: # -*- coding: utf-8 -*-
  #
  from __future__ import print_function
  
  from .__about__ import __version__, __author__, __author_email__, __website__
  
  from . import built_in
  from . import opencascade
  from .helpers import generate_mesh, get_gmsh_major_version
  
  __all__ = [
      "built_in",
      "opencascade",
      "generate_mesh",
      "get_gmsh_major_version",
      "__version__",
      "__author__",
      "__author_email__",
      "__website__",
  ]
  
  try:
      import pipdate
  except ImportError:
      pass
  else:
      if pipdate.needs_checking(__name__):
          print(pipdate.check(__name__, __version__), end="")
  
new_contents: # -*- coding: utf-8 -*-
  #
  from __future__ import print_function
  
  from .__about__ import __version__, __author__, __author_email__, __website__
  
  from . import built_in
  from . import opencascade
  from .helpers import generate_mesh, get_gmsh_major_version, rotation_matrix
  
  __all__ = [
      "built_in",
      "opencascade",
      "generate_mesh",
      "get_gmsh_major_version",
      "rotation_matrix",
      "__version__",
      "__author__",
      "__author_email__",
      "__website__",
  ]
  
  try:
      import pipdate
  except ImportError:
      pass
  else:
      if pipdate.needs_checking(__name__):
          print(pipdate.check(__name__, __version__), end="")
  
subject: add rotation_matrix to public interface