I just got my PR merged into github-api to add 2 factor authentication! As soon as its released, i will update BowlerStudio to support 2fa (Finally!)
See the feature add PR here: https://github.com/github-api/github-api/pull/603
I will add it to GithubPasswordManager, then upstream into the kernel and BowlerStudio. I am just waiting for the official release to go out!