There have already been discussions going on for some time, but nothing concrete has been decided yet. Let's get this sorted out.
I want to rename the branches as follows: `master` -> `3.x` `release-2.x` -> `2.x` I know Piotr is concerned about ordering in GitHub (that is, `3.x` should appear at the top even though `2.x` is the default one), but I am not. For one, this is not a concern for maintainers. Second, we can update README to assist contributors. Thoughts?
