commands: optional options where possible
This makes life a lot easier on API users.
adding dir/baradding foodir/barfoocommitted changeset 0:d44511117907adding dir/bar_2adding foo_2dir/bar_2foo_2committed changeset 1:a85812e0561aadding aadding cremoving aadding bremoving cadding drecording removal of a as rename to b (100% similar)