del over nonexistent path will create every step except the last that purports to delete

[nunodelisboa]

An example is this:

import immutable from 'object-path-immutable';

const obj = { foo: { bar: true } };
const newObj = immutable.del(obj, 'foo.rab.oof'); 

What one gets is

{ foo: { bar: true, rab: { } }

The expected behavior is

{ foo: { bar: true } }

[gendronb]

I confirm...