[Code Reviews and Owners]

[LukeWood]

Thread started by @bhack on #525

https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners

My take: As far as community reviewers go, I think code reviewing from the community is great. We'll need to be sure that they master the Keras style, and that we have a great up-to-date style guide to accomplish this.