You can make the argument that they want to encourage you to submit patches to the project which is on github. It's kinda the same deal with GNU Emacs which bu

You can make the argument that they want to encourage you to submit patches to the project which is on github. It's kinda the same deal with GNU Emacs which bundles a whole bunch of stuff that is directly related to the GNU project. Really at the end of the day it's a fork away to shipping with SVN,CVS,mercurial,gitlab or whatever.