old_contents: # See also examples/example_track/track_meta.py for a longer, commented example
  track = dict(
      author_username='ryanholbrook',
      course_name="Introduction to Deep Learning",
      course_url='https://www.kaggle.com/learn/introduction-to-deep-learning',
      course_forum_url='https://www.kaggle.com/learn-forum',
  )
  
  topics = ["A Single Neuron",              # 1
            "Making Models Deep",           # 2
            "Practical SGD",                # 3
            "Underfitting and Overfitting", # 4
            "Special Layers",               # 5
            # "Deep Classifiers",             # 6
            ]
  
  lessons = [{'topic': topic_name} for topic_name in topics]
  
  notebooks = []
  for i, _ in enumerate(topics):
      notebooks += [
          dict(
              filename="tut{}.ipynb".format(i+1),
              lesson_idx=i,
              type='tutorial',
          ),
      ]
  
  for nb in notebooks:
      nb['dataset_sources'] = [
          'ryanholbrook/dl-course-data',
      ]
  
  
new_contents: # See also examples/example_track/track_meta.py for a longer, commented example
  track = dict(
      author_username='ryanholbrook',
      course_name="Introduction to Deep Learning",
      course_url='https://www.kaggle.com/learn/introduction-to-deep-learning',
      course_forum_url='https://www.kaggle.com/learn-forum',
  )
  
  topics = ["A Single Neuron",              # 1
            "Making Networks Deep",         # 2
            "Practical SGD",                # 3
            "Underfitting and Overfitting", # 4
            "Special Layers",               # 5
            "Deep Classifiers",             # 6
            ]
  
  lessons = [{'topic': topic_name} for topic_name in topics]
  
  notebooks = []
  for i, _ in enumerate(topics):
      notebooks += [
          dict(
              filename="tut{}.ipynb".format(i+1),
              lesson_idx=i,
              type='tutorial',
          ),
      ]
  
  for nb in notebooks:
      nb['dataset_sources'] = [
          'ryanholbrook/dl-course-data',
      ]
  
  
subject: Update lesson names in track_meta