Bugfix on with-callback-on-change for a non-update after a first update on props.

[ivportilla]

Surely you can notice the bug when you look at the code update, but i will illustrate the bug:
Component with props { a: 1, b: 2 }
-> setProps on Component to { a: 2, b: 2 }
-> setProps on Component to { a: 2, b: 3 }

The callback should have been called only one time (a: 1 -> a: 2), but it is actually being called 2 times.

Commit notes:

• Updated with-callback-on-change HOC to update the new state, so when the prop is not updated after a first update it works as expected.
• Added test in order to cover this bugfix.

[codecov]

Codecov Report

Merging #30 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #30   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          17     17           
  Lines         242    243    +1     
=====================================
+ Hits          242    243    +1

Impacted Files	Coverage Δ
packages/with-callback-on-change/src/index.js	100% <100%> (ø)	⬆️

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[codecov]

Codecov Report

Merging #30 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #30   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          17     17           
  Lines         242    243    +1     
=====================================
+ Hits          242    243    +1

Impacted Files	Coverage Δ
packages/with-callback-on-change/src/index.js	100% <100%> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update da662e9...4a40221. Read the comment docs.

[deepsweet]

Thanks! Published as with-callback-on-change@0.3.1.