Tasos Tsournos issues

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                                            Tasos Tsournos

v4 is deprecated

Closes: #14 Fixes this behavior: dotize.backward({"2": "2"}) => [ null, null, "2" ] // expect { "2" : "2"}

Is this behavior normal? `dotize.backward({"2": "2"}) => [ null, null, "2" ] // expect { "2" : "2"}`