Just merged: huge refactor of the data block API. If you were only using the databunch factory methods, this shouldn’t impact you.
If you were using the data block API note that the calls to dataset, numericalize and tokenize don’t exist anymore and that you now have to split your data before labeling it.
If you were using the internal datasets of fastai… learn how to use the datablock API very quickly because those don’t exist anymore.
The basic idea is that to allow more flexibility, there is no dataset anymore: you explain what are your xs and your ys with the datablock API and that’s it. That way regression (or single classification or multi classification) for computer vision has the same underlying class than for text or tabular.
Update to the docs will follow shortly. Lessons should run smoothly.