Dev_nb export freeze

[jeremy (Jeremy Howard)]

As mentioned here, this is done now

Developer chat

Didn’t have time to post a message here yesterday, but the modules have been added in this commit I made a few changes this morning in this commit then corrected bugs and added the all_ for each module that needs it in this commit. Finally in this commit I added five examples notebooks to check everything was working well (dogs and cats, cifar10, imdb classification, movie lens and rossmann). As Jeremy explained, you shouldn’t touch the dev_nb anymore (except to add prose). Bug fixes should b…