New key with a null value not applied in update

[mark-rushakoff]

This test fails because the result is still {}.

it('assigns null values', () => {
  expect(u({isNull: null}, {})).to.deep.equal({isNull: null});
});

[aaronjensen]

Thanks for the repro! Fixed in 0.2.3

[mark-rushakoff]

Thanks for the quick fix! I'm digging updeep so far, it plays perfectly with Redux.