v0.094

      [INCOMPATIBLE CHANGES]

      - When pulling or adding a distribution that contains packages that
      partially overlap with an existing distribution on the stack, then
      all packages from the existing distribution are removed from the
      stack, not just the overlapping ones.  This means it is impossible
      for the stack to contain only *some* of the packages from any
      distribution.

      In nearly all cases, this is what you want because you never want
      to end up with an installation that has some packages from one
      distribution and some packages from another.  If you really want
      your stack to contain the packages from both distributions like
      the PAUSE index does, then Pinto probably isn't the right tool
      for you.

      [NEW COMMANDS]

      - The "roots" command will list all the distributions that are
      the root ancestors of the dependency graph which includes all
      distributions in the stack.  This command can be used to install
      every distribution in the stack in one shot.  There are some
      caveats though.  See the documentation for details.