Fixing notebook 1: ConvLearner not found

[jeremy (Jeremy Howard)]

Yup - everyone should ensure that they notifications turned on for the official updates thread, since any breaking changes are announced there:

Lesson 1 official resources and updates

Note that after you conda update and git pull, you’ll find that there’s been one change to fastai - ConvLearner is now called create_cnn. You’ll need to make that change in any notebooks that you’ve created too.