title: How can I define an alias for a Git subcommand (e.g. for `list` in `git stash list`)?
body: <p>Whenever I try to type <code>git stash list</code> my fingers go rogue and type <code>git stash ls</code>.  I'd really like to alias ls to list, but only within the stash subcommand.  Is this possible with git aliases?</p>