Returns list of children changesets.

def children(self):
        """
        Returns list of children changesets.
        """
        rev_filter = settings.GIT_REV_FILTER
        cmd = "rev-list %s --children | grep '^%s'" % (rev_filter, self.raw_id)
        so, se = self.repository.run_git_command(cmd)

        children = []
        for l in so.splitlines():
            childs = l.split(' ')[1:]
            children.extend(childs)
        return [self.repository.get_changeset(cs) for cs in children]