Even More Mercurial: sub-repos

• http://lazymalloc.blogspot.com/2008/05/managing-multiple-repositories-with.html
  
• http://kiln.stackexchange.com/questions/874/cannot-figure-out-subrepos/1768#1768
• http://semver.org/
• http://hg.python-works.com/ - this is actually pretty cool. Looks like we need a repo per project. This should speed up repo and user management.