old_contents: from slidegen import Generator
  from slidegen import DataProvider
  
  g = Generator(DataProvider())
  
  print('''
  controls: false
  output: slide.html
  
  ---
  ''')
  print(g.cover())
  print(g.content())
  for i in range(4):
      print(g.content())
  print(g.full_image())
  
new_contents: from slidegen import Generator
  from slidegen import DataProvider
  
  g = Generator(DataProvider())
  
  print('''
  controls: false
  output: slide.html
  
  ---
  ''')
  print(g.cover())
  print(g.content())
  for i in range(4):
      print(g.content())
  print(g.full_image())
  print('''
  # Q & A
  ''')
  
subject: Add last slide