Code for this tutorial.
The commit history in this repo is intended to follow the sections in the tutorial. When updating the code in this repository, care must be taken to preserve the correspondence between this history and the tutorial. To edit this repo, perform an interactive rebase from the beginning of time:
git rebase -i --root
Edit the relevant commits, then run the scripts/update-branches.sh script to
move all the branch pointers to their post-rebase counterparts (based on labels
in commit messages), then force push each branch to github.
Don't forget to also force push the master branch to be consistent with the end of the tutorial.