Outdated packages can open your application up to security issues. Moreover, newer versions will often have performance improvements, bug fixes and generally fewer problems. Keeping them up to date over multiple codebases can be quite painful, but it's possible to bring this effort down to close to zero with a …

You probably already know the value of testing your code. Your Django migrations are code, therefore you should test them. However, testing data migrations in particular can be tricky, and there's no documentation on how to do it.

Typically your schema migrations don't need any testing as your migrations are …