This is a git branching strategy I've been thinking about:

http://pcottle.github.io/learnGitBranching/?NODEMO&command=git%20tag%20v40;%20git%20checkout%20-b%20v401;%20gc;%20git%20checkout%20-b%20v402;%20gc;%20git%20checkout%20v401;%20gc;%20git%20checkout%20master;%20git%20merge%20v401;%20git%20branch%20-d%20v401;%20git%20tag%20v401;%20git%20checkout%20v402;%20git%20merge%20master;%20gc;%20git%20checkout%20-b%20v403;%20gc;%20git%20checkout%20v402;%20gc;%20git%20checkout%20master;%20git%20merge%20v402;%20git%20branch%20-d%20v402;%20git%20tag%20v402;%20git%20checkout%20v403;%20git%20merge%20master;%20gc

$ git tag v40
$ git checkout -b v401
$ git commit
$ git checkout -b v402
$ git commit
$ git checkout v401
$ git commit
$ git checkout master
$ git merge v401
$ git branch -d v401
$ git tag v401
$ git checkout v402
$ git merge master
$ git commit
$ git checkout -b v403
$ git commit
$ git checkout v402
$ git commit
$ git checkout master
$ git merge v402
$ git branch -d v402
$ git tag v402
$ git checkout v403
$ git merge master
$ git commit